Fort Sewall
E667026
Fort Sewall is a historic coastal fortification and public park in Marblehead, Massachusetts, notable for its role in early American military defense and its scenic harbor views.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fort Sewall canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7479931 — 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: Fort Sewall Context triple: [Marblehead, Massachusetts, hasLandmark, Fort Sewall]
-
A.
Fort Hancock
Fort Hancock is a historic former U.S. Army coastal defense installation located on Sandy Hook in New Jersey, now preserved as part of Gateway National Recreation Area.
-
B.
Fort Ward
Fort Ward is a historic waterfront neighborhood and former military installation on Bainbridge Island in Washington State.
-
C.
Fort C. F. Smith
Fort C. F. Smith was a 19th-century U.S. Army post in Montana Territory that protected travelers along the Bozeman Trail and became a focal point of conflict during Red Cloud's War.
-
D.
Fort McPherson
Fort McPherson was a major U.S. Army installation in Atlanta, Georgia, that long served as a key command and administrative center before its closure and redevelopment.
-
E.
Fort James
Fort James is a historic coastal fortification on the former Gold Coast (in present-day Ghana), built by European traders during the era of Atlantic commerce and colonial expansion.
- 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: Fort Sewall Target entity description: Fort Sewall is a historic coastal fortification and public park in Marblehead, Massachusetts, notable for its role in early American military defense and its scenic harbor views.
-
A.
Fort Hancock
Fort Hancock is a historic former U.S. Army coastal defense installation located on Sandy Hook in New Jersey, now preserved as part of Gateway National Recreation Area.
-
B.
Fort Ward
Fort Ward is a historic waterfront neighborhood and former military installation on Bainbridge Island in Washington State.
-
C.
Fort C. F. Smith
Fort C. F. Smith was a 19th-century U.S. Army post in Montana Territory that protected travelers along the Bozeman Trail and became a focal point of conflict during Red Cloud's War.
-
D.
Fort McPherson
Fort McPherson was a major U.S. Army installation in Atlanta, Georgia, that long served as a key command and administrative center before its closure and redevelopment.
-
E.
Fort James
Fort James was a 17th-century British colonial fortification in what is now Lower Manhattan, New York City, that served as a key military and administrative center after the English seized New Amsterdam from the Dutch.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
historic coastal fortification
ⓘ
public park ⓘ |
| access |
pedestrian access
ⓘ
road access ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| era |
American Revolutionary War era
ⓘ
War of 1812 era ⓘ colonial period ⓘ |
| hasCategory |
Forts in Massachusetts
ⓘ
Military history of Massachusetts ⓘ National Register of Historic Places in Essex County, Massachusetts NERFINISHED ⓘ Parks in Massachusetts ⓘ Tourist attractions in Essex County, Massachusetts ⓘ |
| hasFeature |
earthwork fortifications
ⓘ
grassy open areas ⓘ gun emplacements ⓘ historic cannon ⓘ interpretive signage ⓘ overlook points ⓘ stone structures ⓘ underground magazine ⓘ walking paths ⓘ |
| hasViewOf |
Atlantic Ocean
ⓘ
Marblehead Harbor NERFINISHED ⓘ |
| heritageDesignation | listed on the National Register of Historic Places ⓘ |
| locatedIn | Essex County, Massachusetts ⓘ |
| location | Marblehead, Massachusetts NERFINISHED ⓘ |
| namedAfter | Samuel Sewall NERFINISHED ⓘ |
| near |
Marblehead Light
NERFINISHED
ⓘ
Marblehead Neck NERFINISHED ⓘ Old Town Marblehead NERFINISHED ⓘ |
| openToPublic | true ⓘ |
| operator | Town of Marblehead NERFINISHED ⓘ |
| overlooks | Marblehead Harbor NERFINISHED ⓘ |
| ownedBy | Town of Marblehead NERFINISHED ⓘ |
| partOf | coastal defenses of Massachusetts ⓘ |
| primaryUseToday |
historical tourism
ⓘ
recreation ⓘ sightseeing ⓘ |
| significance |
early American military defense site
ⓘ
local Marblehead landmark ⓘ scenic viewpoint ⓘ |
| usedDuring |
19th-century coastal defense period
ⓘ
American Revolutionary War NERFINISHED ⓘ War of 1812 NERFINISHED ⓘ |
| usedFor |
coastal defense
ⓘ
historical education ⓘ public recreation ⓘ |
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: Fort Sewall Description of subject: Fort Sewall is a historic coastal fortification and public park in Marblehead, Massachusetts, notable for its role in early American military defense and its scenic harbor views.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.