Triple
T2063904
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | San Mateo |
E45852
|
entity |
| Predicate | hasRailStation |
P726
|
FINISHED |
| Object |
Hillsdale station
Hillsdale station is a Caltrain commuter rail stop in San Mateo, California, serving as a key transit hub for Peninsula commuters.
|
E258505
|
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: Hillsdale station | Statement: [San Mateo, hasRailStation, Hillsdale station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Hillsdale station Context triple: [San Mateo, hasRailStation, Hillsdale station]
-
A.
St. Clair station
St. Clair station is a Toronto Transit Commission subway station on Line 1 in midtown Toronto, serving the St. Clair Avenue and Yonge Street area with connections to streetcar and bus routes.
-
B.
Homewood station
Homewood station is a commuter rail and Amtrak train station serving the village of Homewood in the south suburbs of Chicago, Illinois.
-
C.
Clark/Lake station
Clark/Lake station is a major Chicago 'L' transit hub in the Loop where multiple CTA lines intersect, providing extensive connections across the city.
-
D.
Snyder station
Snyder station is an underground rapid transit stop on SEPTA’s Broad Street Line serving South Philadelphia.
-
E.
Ferndale station
Ferndale station is a Baltimore Light Rail stop serving the Ferndale area of Glen Burnie, Maryland.
- 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: Hillsdale station Triple: [San Mateo, hasRailStation, Hillsdale station]
Generated description
Hillsdale station is a Caltrain commuter rail stop in San Mateo, California, serving as a key transit hub for Peninsula commuters.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Hillsdale station Target entity description: Hillsdale station is a Caltrain commuter rail stop in San Mateo, California, serving as a key transit hub for Peninsula commuters.
-
A.
St. Clair station
St. Clair station is a Toronto Transit Commission subway station on Line 1 in midtown Toronto, serving the St. Clair Avenue and Yonge Street area with connections to streetcar and bus routes.
-
B.
Homewood station
Homewood station is a commuter rail and Amtrak train station serving the village of Homewood in the south suburbs of Chicago, Illinois.
-
C.
Clark/Lake station
Clark/Lake station is a major Chicago 'L' transit hub in the Loop where multiple CTA lines intersect, providing extensive connections across the city.
-
D.
Snyder station
Snyder station is an underground rapid transit stop on SEPTA’s Broad Street Line serving South Philadelphia.
-
E.
Ferndale station
Ferndale station is a Baltimore Light Rail stop serving the Ferndale area of Glen Burnie, Maryland.
- 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_69a8891b38288190abd572ccad9b6928 |
completed | March 4, 2026, 7:33 p.m. |
| NER | Named-entity recognition | batch_69abb9d3a92081909416c1d087876e99 |
completed | March 7, 2026, 5:38 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ae95efea5c8190a8a63e36cf3247e7 |
completed | March 9, 2026, 9:42 a.m. |
| NEDg | Description generation | batch_69ae9694c390819095b3e935224902d3 |
completed | March 9, 2026, 9:44 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69ae9a5b2a04819091b102c51a5b2af4 |
completed | March 9, 2026, 10 a.m. |
Created at: March 4, 2026, 7:40 p.m.