Triple
T76620
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Caltrain |
E1530
|
entity |
| Predicate | formerName |
P65
|
FINISHED |
| Object |
Peninsula Commute
Peninsula Commute was the historic commuter rail service on the San Francisco Peninsula that later became known as Caltrain.
|
E7289
|
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: Peninsula Commute | Statement: [Caltrain, formerName, Peninsula Commute]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Peninsula Commute Context triple: [Caltrain, formerName, Peninsula Commute]
-
A.
North Shore
North Shore is a coastal region in northeastern Massachusetts known for its historic seaside towns, beaches, and proximity to Boston.
-
B.
Riverway
Riverway is a linear park and waterway in Boston that forms part of the Emerald Necklace, offering scenic green space and recreational paths near the Longwood Medical Area.
-
C.
Northeast Corridor
The Northeast Corridor is the busiest passenger rail line in the United States, running primarily Amtrak and commuter trains along the urbanized spine of the East Coast between major cities such as Washington, D.C., Philadelphia, New York City, and Boston.
-
D.
Seven Corners
Seven Corners is a densely developed commercial and residential area in Fairfax County, Northern Virginia, known for its major road junction and large shopping centers.
-
E.
Queen City of the Trails
Queen City of the Trails is a nickname for Independence, Missouri, reflecting its historic role as a major starting point for westward pioneer trails such as the Oregon, Santa Fe, and California Trails.
- 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: Peninsula Commute Triple: [Caltrain, formerName, Peninsula Commute]
Generated description
Peninsula Commute was the historic commuter rail service on the San Francisco Peninsula that later became known as Caltrain.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Peninsula Commute Target entity description: Peninsula Commute was the historic commuter rail service on the San Francisco Peninsula that later became known as Caltrain.
-
A.
North Shore
North Shore is a coastal region in northeastern Massachusetts known for its historic seaside towns, beaches, and proximity to Boston.
-
B.
Riverway
Riverway is a linear park and waterway in Boston that forms part of the Emerald Necklace, offering scenic green space and recreational paths near the Longwood Medical Area.
-
C.
Muni
Muni is San Francisco’s primary public transit agency, operating buses, light rail, historic streetcars, and the city’s iconic cable cars.
-
D.
Northeast Corridor
The Northeast Corridor is the busiest passenger rail line in the United States, running primarily Amtrak and commuter trains along the urbanized spine of the East Coast between major cities such as Washington, D.C., Philadelphia, New York City, and Boston.
-
E.
Seven Corners
Seven Corners is a densely developed commercial and residential area in Fairfax County, Northern Virginia, known for its major road junction and large shopping centers.
- 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_69a24c60d19c8190a1b6c105ca59ef5b |
completed | Feb. 28, 2026, 2:01 a.m. |
| NER | Named-entity recognition | batch_69a24f1d20b88190b66836cc018e52e1 |
completed | Feb. 28, 2026, 2:12 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a25abc7b648190b8a83a05f4c76af0 |
completed | Feb. 28, 2026, 3:02 a.m. |
| NEDg | Description generation | batch_69a25caa409881909eb7dfe7d038cc39 |
completed | Feb. 28, 2026, 3:10 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69a25e287cc88190b2eb5ae02bd2f9d1 |
completed | Feb. 28, 2026, 3:16 a.m. |
Created at: Feb. 28, 2026, 2:06 a.m.