Triple
T7721965
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Near South Side, Chicago |
E175033
|
entity |
| Predicate | contains |
P35
|
FINISHED |
| Object |
Central Station, Chicago
Central Station in Chicago was a major passenger railroad terminal that served as a key transportation hub for several railroads on the city's Near South Side.
|
E684149
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Central Station, Chicago | Statement: [Near South Side, Chicago, contains, Central Station, Chicago]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Central Station, Chicago Context triple: [Near South Side, Chicago, contains, Central Station, Chicago]
-
A.
Chicago Union Station
Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
-
B.
Washington/Wabash station (CTA)
Washington/Wabash station (CTA) is an elevated Chicago 'L' station in the Loop serving the Brown, Green, Orange, Pink, and Purple Lines.
-
C.
Chicago, Burlington and Quincy Railroad station
Chicago, Burlington and Quincy Railroad station was the original name of what is now known as Hinsdale station, a historic commuter rail stop in Hinsdale, Illinois that once served the CB&Q Railroad.
-
D.
Sedgwick station (Chicago "L")
Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
-
E.
Chicago and North Western Terminal (Ogilvie Transportation Center)
The Chicago and North Western Terminal, now known as Ogilvie Transportation Center, is a major commuter rail hub in downtown Chicago serving Metra trains and connecting the city’s suburbs with its central business district.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Central Station, Chicago Triple: [Near South Side, Chicago, contains, Central Station, Chicago]
Generated description
Central Station in Chicago was a major passenger railroad terminal that served as a key transportation hub for several railroads on the city's Near South Side.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Central Station, Chicago Target entity description: Central Station in Chicago was a major passenger railroad terminal that served as a key transportation hub for several railroads on the city's Near South Side.
-
A.
Chicago Union Station
Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
-
B.
Washington/Wabash station (CTA)
Washington/Wabash station (CTA) is an elevated Chicago 'L' station in the Loop serving the Brown, Green, Orange, Pink, and Purple Lines.
-
C.
Chicago, Burlington and Quincy Railroad station
Chicago, Burlington and Quincy Railroad station was the original name of what is now known as Hinsdale station, a historic commuter rail stop in Hinsdale, Illinois that once served the CB&Q Railroad.
-
D.
Sedgwick station (Chicago "L")
Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
-
E.
Chicago and North Western Terminal (Ogilvie Transportation Center)
The Chicago and North Western Terminal, now known as Ogilvie Transportation Center, is a major commuter rail hub in downtown Chicago serving Metra trains and connecting the city’s suburbs with its central business district.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69c6995d541c81909eaa646b1a8369a9 |
completed | March 27, 2026, 2:51 p.m. |
| NER | Named-entity recognition | batch_69c702f1786881908b025d8986e5f1fa |
completed | March 27, 2026, 10:21 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c8b51b612881909f20a6b777db348c |
completed | March 29, 2026, 5:14 a.m. |
| NEDg | Description generation | batch_69c8b639df28819095af623e96181d9c |
completed | March 29, 2026, 5:18 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c8b68f44148190b08882625db98f96 |
completed | March 29, 2026, 5:20 a.m. |
Created at: March 27, 2026, 4:05 p.m.