Triple
T3804324
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | L Line (Los Angeles Metro) |
E91766
|
entity |
| Predicate | servedCorridor |
P2566
|
FINISHED |
| Object |
Eastside Extension corridor
The Eastside Extension corridor is a light rail transit corridor in East Los Angeles that carries Metro Rail service between downtown Los Angeles and several predominantly Latino eastside communities.
|
E391944
|
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: Eastside Extension corridor | Statement: [L Line (Los Angeles Metro), servedCorridor, Eastside Extension corridor]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Eastside Extension corridor Context triple: [L Line (Los Angeles Metro), servedCorridor, Eastside Extension corridor]
-
A.
Foothill Extension corridor
The Foothill Extension corridor is a segment of Los Angeles County’s light rail network that extends service eastward through the San Gabriel Valley, connecting additional suburban communities to the regional Metro Rail system.
-
B.
Red Line Northwest Extension corridor
The Red Line Northwest Extension corridor is a planned expansion route of Boston's MBTA Red Line intended to extend rapid transit service northwest from its current terminus.
-
C.
Alameda Corridor
The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
-
D.
Southwest Corridor
The Southwest Corridor is a major transportation and greenway corridor in Boston that combines rail lines, parks, and bike paths connecting downtown with southwestern neighborhoods.
-
E.
East-West Tollway corridor
The East-West Tollway corridor is a major suburban business and technology hub in the Chicago metropolitan area, known for its concentration of corporate headquarters, research facilities, and educational institutions along Interstate 88 in Illinois.
- 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: Eastside Extension corridor Triple: [L Line (Los Angeles Metro), servedCorridor, Eastside Extension corridor]
Generated description
The Eastside Extension corridor is a light rail transit corridor in East Los Angeles that carries Metro Rail service between downtown Los Angeles and several predominantly Latino eastside communities.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Eastside Extension corridor Target entity description: The Eastside Extension corridor is a light rail transit corridor in East Los Angeles that carries Metro Rail service between downtown Los Angeles and several predominantly Latino eastside communities.
-
A.
Foothill Extension corridor
The Foothill Extension corridor is a segment of Los Angeles County’s light rail network that extends service eastward through the San Gabriel Valley, connecting additional suburban communities to the regional Metro Rail system.
-
B.
Red Line Northwest Extension corridor
The Red Line Northwest Extension corridor is a planned expansion route of Boston's MBTA Red Line intended to extend rapid transit service northwest from its current terminus.
-
C.
Alameda Corridor
The Alameda Corridor is a 20-mile freight rail expressway in Los Angeles County that consolidates and streamlines cargo movement between the region’s ports and the national rail network.
-
D.
Southwest Corridor
The Southwest Corridor is a major transportation and greenway corridor in Boston that combines rail lines, parks, and bike paths connecting downtown with southwestern neighborhoods.
-
E.
East-West Tollway corridor
The East-West Tollway corridor is a major suburban business and technology hub in the Chicago metropolitan area, known for its concentration of corporate headquarters, research facilities, and educational institutions along Interstate 88 in Illinois.
- 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_69aed96354f48190a768966d6bd19b04 |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69aee7bc240881909e91b7b99403a13c |
completed | March 9, 2026, 3:31 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b503f107148190bf7ce74eb7dee9b2 |
completed | March 14, 2026, 6:45 a.m. |
| NEDg | Description generation | batch_69b50454107081908adb0afbfbad44c9 |
completed | March 14, 2026, 6:46 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69b504b39c7c8190bf267fa0af33ee37 |
completed | March 14, 2026, 6:48 a.m. |
Created at: March 9, 2026, 3:15 p.m.