Triple
T11600878
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | South Chicago branch |
E275124
|
entity |
| Predicate | terminus |
P388
|
FINISHED |
| Object |
South Chicago station
South Chicago station is a Metra commuter rail terminal on Chicago’s South Side serving as the endpoint of the South Chicago branch of the Electric District line.
|
E936184
|
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: South Chicago station | Statement: [South Chicago branch, terminus, South Chicago station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: South Chicago station Context triple: [South Chicago branch, terminus, South Chicago station]
-
A.
East Chicago station
East Chicago station is a commuter rail stop in East Chicago, Indiana, serving passengers on the South Shore Line between Chicago and South Bend.
-
B.
Waukegan station
Waukegan station is a commuter rail station in Waukegan, Illinois, serving as a key stop and northern terminus for many Metra Union Pacific North Line trains between Chicago and the northern suburbs.
-
C.
Joliet Station
Joliet Station is a major commuter rail hub in Joliet, Illinois, serving as a key terminus and transfer point for multiple Chicago-area rail lines.
-
D.
Mundelein station
Mundelein station is a commuter rail stop in Mundelein, Illinois, serving passengers on Metra’s North Central Service line between Chicago and its northern suburbs.
-
E.
Palos Heights station
Palos Heights station is a commuter rail stop in Palos Heights, Illinois, serving passengers on Metra’s SouthWest Service line between Chicago and its southwestern suburbs.
- 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: South Chicago station Triple: [South Chicago branch, terminus, South Chicago station]
Generated description
South Chicago station is a Metra commuter rail terminal on Chicago’s South Side serving as the endpoint of the South Chicago branch of the Electric District line.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: South Chicago station Target entity description: South Chicago station is a Metra commuter rail terminal on Chicago’s South Side serving as the endpoint of the South Chicago branch of the Electric District line.
-
A.
East Chicago station
East Chicago station is a commuter rail stop in East Chicago, Indiana, serving passengers on the South Shore Line between Chicago and South Bend.
-
B.
Waukegan station
Waukegan station is a commuter rail station in Waukegan, Illinois, serving as a key stop and northern terminus for many Metra Union Pacific North Line trains between Chicago and the northern suburbs.
-
C.
Joliet Station
Joliet Station is a major commuter rail hub in Joliet, Illinois, serving as a key terminus and transfer point for multiple Chicago-area rail lines.
-
D.
Mundelein station
Mundelein station is a commuter rail stop in Mundelein, Illinois, serving passengers on Metra’s North Central Service line between Chicago and its northern suburbs.
-
E.
Palos Heights station
Palos Heights station is a commuter rail stop in Palos Heights, Illinois, serving passengers on Metra’s SouthWest Service line between Chicago and its southwestern suburbs.
- 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_69d6aae6b14c81908dc5a74bad7591f9 |
completed | April 8, 2026, 7:22 p.m. |
| NER | Named-entity recognition | batch_69d8954c3c248190bcccd4c7ff667b3a |
completed | April 10, 2026, 6:14 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69e8a7f018a881908f4b206699044ceb |
completed | April 22, 2026, 10:50 a.m. |
| NEDg | Description generation | batch_69e9e9c6b7c08190838a08cda0290671 |
completed | April 23, 2026, 9:43 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ee5b254a2081909cba97a6ecb10601 |
completed | April 26, 2026, 6:36 p.m. |
Created at: April 8, 2026, 9:38 p.m.