Michigan City East Pierhead Lighthouse
E415837
The Michigan City East Pierhead Lighthouse is a historic Lake Michigan navigational beacon known for its distinctive pier setting and status as an iconic symbol of Michigan City’s maritime heritage.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Michigan City East Pierhead Lighthouse canonical | 3 |
| Michigan City East Pierhead Light | 1 |
| Old Michigan City Lighthouse (Michigan City Lighthouse Museum) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4120888 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Michigan City East Pierhead Lighthouse Context triple: [Michigan City, Indiana, hasLandmark, Michigan City East Pierhead Lighthouse]
-
A.
Marquette Harbor Lighthouse
Marquette Harbor Lighthouse is a historic red-brick navigational beacon on Lake Superior that has guided ships into Marquette, Michigan’s harbor since the 19th century.
-
B.
Muskegon South Pierhead Light
Muskegon South Pierhead Light is a historic red lighthouse on Lake Michigan in Muskegon, Michigan, guiding vessels at the entrance to Muskegon Lake.
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C.
Grosse Point Lighthouse
Grosse Point Lighthouse is a historic 19th-century lighthouse on the shore of Lake Michigan, notable for guiding ships into the Chicago area and now serving as a preserved landmark and museum.
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D.
South Manitou Island Lighthouse
South Manitou Island Lighthouse is a historic navigational beacon on South Manitou Island in Lake Michigan, known for guiding ships through the Manitou Passage and for its preserved 19th-century architecture.
-
E.
Lorain Lighthouse
Lorain Lighthouse is a historic navigational beacon on Lake Erie, known for its distinctive architecture and status as an iconic symbol of Lorain, Ohio.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Michigan City East Pierhead Lighthouse Target entity description: The Michigan City East Pierhead Lighthouse is a historic Lake Michigan navigational beacon known for its distinctive pier setting and status as an iconic symbol of Michigan City’s maritime heritage.
-
A.
Marquette Harbor Lighthouse
Marquette Harbor Lighthouse is a historic red-brick navigational beacon on Lake Superior that has guided ships into Marquette, Michigan’s harbor since the 19th century.
-
B.
Muskegon South Pierhead Light
Muskegon South Pierhead Light is a historic red lighthouse on Lake Michigan in Muskegon, Michigan, guiding vessels at the entrance to Muskegon Lake.
-
C.
Grosse Point Lighthouse
Grosse Point Lighthouse is a historic 19th-century lighthouse on the shore of Lake Michigan, notable for guiding ships into the Chicago area and now serving as a preserved landmark and museum.
-
D.
South Manitou Island Lighthouse
South Manitou Island Lighthouse is a historic navigational beacon on South Manitou Island in Lake Michigan, known for guiding ships through the Manitou Passage and for its preserved 19th-century architecture.
-
E.
Lorain Lighthouse
Lorain Lighthouse is a historic navigational beacon on Lake Erie, known for its distinctive architecture and status as an iconic symbol of Lorain, Ohio.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
historic place
ⓘ
lighthouse ⓘ navigational aid ⓘ |
| access | reachable on foot along the pier ⓘ |
| associatedStructure |
Michigan City pier
ⓘ
elevated catwalk ⓘ |
| category |
Buildings and structures in LaPorte County, Indiana
ⓘ
Lighthouses on the Great Lakes ⓘ Tourist attractions in LaPorte County, Indiana ⓘ Transportation in LaPorte County, Indiana ⓘ |
| constructionMaterial |
cast iron
ⓘ
steel ⓘ |
| coordinates | approximately 41.729°N 86.905°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| feature | catwalk used historically by lighthouse keepers ⓘ |
| focalHeight | about 55 feet ⓘ |
| formerManagingOrganization |
United States Coast Guard
ⓘ
United States Lighthouse Service ⓘ |
| foundation | concrete pier ⓘ |
| function | guides vessels into Michigan City harbor ⓘ |
| height | about 49 feet ⓘ |
| heritageStatus | iconic symbol of Michigan City’s maritime heritage ⓘ |
| lanternColor | black ⓘ |
| lightCharacteristic | flashing white light ⓘ |
| lightingSource | electric light ⓘ |
| locatedIn |
Indiana
ⓘ
LaPorte County, Indiana NERFINISHED ⓘ Michigan City, Indiana NERFINISHED ⓘ |
| locatedOn | Lake Michigan ⓘ |
| managingOrganization |
Michigan City, Indiana
ⓘ
surface form:
City of Michigan City
|
| marking | white tower with black lantern ⓘ |
| nearbyAttraction |
Michigan City East Pierhead Lighthouse
self-linksurface differs
ⓘ
surface form:
Old Michigan City Lighthouse (Michigan City Lighthouse Museum)
Washington Park ⓘ Washington Park Beach ⓘ |
| notableFor |
association with Michigan City’s maritime history
ⓘ
distinctive pier setting ⓘ |
| originalLens | Fresnel lens ⓘ |
| ownership |
Michigan City, Indiana
ⓘ
surface form:
City of Michigan City
|
| publicAccess | accessible via pier walkway ⓘ |
| purpose | aid to navigation on Lake Michigan ⓘ |
| region | Great Lakes region ⓘ |
| status | active aid to navigation ⓘ |
| tourism | popular tourist attraction ⓘ |
| towerShape | square pyramidal tower ⓘ |
| view | overlooks Lake Michigan and Michigan City harbor ⓘ |
| waterbody | Lake Michigan ⓘ |
| yearLit | 1904 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Michigan City East Pierhead Lighthouse Description of subject: The Michigan City East Pierhead Lighthouse is a historic Lake Michigan navigational beacon known for its distinctive pier setting and status as an iconic symbol of Michigan City’s maritime heritage.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
Michigan City East Pierhead Lighthouse
→
nearbyAttraction
→
Michigan City East Pierhead Lighthouse
self-linksurface differs
ⓘ
this entity surface form:
Old Michigan City Lighthouse (Michigan City Lighthouse Museum)
subject surface form:
Washington Park (Michigan City)
subject surface form:
Washington Park (Michigan City)
this entity surface form:
Michigan City East Pierhead Light