875 North Michigan Avenue
E640437
875 North Michigan Avenue is a prominent Chicago skyscraper formerly known as the John Hancock Center, noted for its distinctive tapered design and observation deck overlooking the city and Lake Michigan.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 875 North Michigan Avenue canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7079652 — 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: 875 North Michigan Avenue Context triple: [Downtown Chicago, hasLandmark, 875 North Michigan Avenue]
-
A.
407 South Dearborn Street
407 South Dearborn Street is the Chicago Loop address of the historic Old Colony Building, a notable late-19th-century high-rise.
-
B.
200 South Wacker Drive
200 South Wacker Drive is a modern office skyscraper located in Chicago’s Loop business district.
-
C.
311 South Wacker Drive
311 South Wacker Drive is a prominent postmodern office skyscraper in Chicago, notable for its illuminated crown and status as one of the city's tallest buildings.
-
D.
150 North Riverside
150 North Riverside is a prominent modern office skyscraper in downtown Chicago, known for its strikingly narrow base and riverfront location along the Chicago River.
-
E.
One North LaSalle
One North LaSalle is a historic Art Deco skyscraper in Chicago’s Loop, recognized for its distinctive architecture and status as a designated city landmark.
- 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: 875 North Michigan Avenue Target entity description: 875 North Michigan Avenue is a prominent Chicago skyscraper formerly known as the John Hancock Center, noted for its distinctive tapered design and observation deck overlooking the city and Lake Michigan.
-
A.
407 South Dearborn Street
407 South Dearborn Street is the Chicago Loop address of the historic Old Colony Building, a notable late-19th-century high-rise.
-
B.
200 South Wacker Drive
200 South Wacker Drive is a modern office skyscraper located in Chicago’s Loop business district.
-
C.
311 South Wacker Drive
311 South Wacker Drive is a prominent postmodern office skyscraper in Chicago, notable for its illuminated crown and status as one of the city's tallest buildings.
-
D.
150 North Riverside
150 North Riverside is a prominent modern office skyscraper in downtown Chicago, known for its strikingly narrow base and riverfront location along the Chicago River.
-
E.
One North LaSalle
One North LaSalle is a historic Art Deco skyscraper in Chicago’s Loop, recognized for its distinctive architecture and status as a designated city landmark.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | skyscraper ⓘ |
| antennaSpireHeight |
1499 feet
ⓘ
457 meters ⓘ |
| architect |
Bruce Graham
NERFINISHED
ⓘ
Fazlur Rahman Khan NERFINISHED ⓘ |
| architecturalStyle |
Modernism
NERFINISHED
ⓘ
Structural expressionism ⓘ |
| architectureFirm | Skidmore, Owings & Merrill NERFINISHED ⓘ |
| buildingType | mixed-use ⓘ |
| city |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago
|
| completionDate | 1969 ⓘ |
| constructionStartDate | 1965 ⓘ |
| contains |
broadcasting facilities
ⓘ
offices ⓘ residential condominiums ⓘ retail space ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| floorCount | 100 ⓘ |
| formerName | John Hancock Center NERFINISHED ⓘ |
| hasAntennaSpire | yes ⓘ |
| hasElevatorCount | 50+ ⓘ |
| hasFeature |
X-braced exterior
ⓘ
observation deck ⓘ tapered design ⓘ |
| hasNickname | Big John NERFINISHED ⓘ |
| hasObservationDeck | 360 CHICAGO Observation Deck NERFINISHED ⓘ |
| hasStructuralSystem | trussed tube system ⓘ |
| hasViewOf |
Chicago skyline
ⓘ
Lake Michigan NERFINISHED ⓘ |
| height |
1128 feet
ⓘ
344 meters ⓘ |
| locatedInDistrict | Near North Side NERFINISHED ⓘ |
| locatedInNeighborhood | Magnificent Mile NERFINISHED ⓘ |
| locatedOn | North Michigan Avenue NERFINISHED ⓘ |
| location |
Chicago
NERFINISHED
ⓘ
Illinois ⓘ United States of America ⓘ
surface form:
United States
|
| observationDeckLocation | 94th floor ⓘ |
| openingDate | 1970 ⓘ |
| owner | Hearn Company NERFINISHED ⓘ |
| partOf | Chicago skyline icon ⓘ |
| ranking |
one of the tallest buildings in Chicago
ⓘ
one of the tallest buildings in the United States ⓘ |
| roofHeight | 344 meters ⓘ |
| state | Illinois ⓘ |
| streetAddress | 875 North Michigan Avenue ⓘ |
| structuralEngineer | Fazlur Rahman Khan NERFINISHED ⓘ |
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: 875 North Michigan Avenue Description of subject: 875 North Michigan Avenue is a prominent Chicago skyscraper formerly known as the John Hancock Center, noted for its distinctive tapered design and observation deck overlooking the city and Lake Michigan.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Downtown Chicago