Triple
T5484753
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Mid-Corridor Trench |
E123551
|
entity |
| Predicate | partOf |
P40
|
FINISHED |
| Object | Alameda Corridor |
E24113
|
NE FINISHED |
How this triple was built (2 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: Alameda Corridor | Statement: [Mid-Corridor Trench, partOf, Alameda Corridor]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Alameda Corridor Context triple: [Mid-Corridor Trench, partOf, Alameda Corridor]
-
A.
Alameda Corridor
chosen
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.
-
B.
Altamont Corridor Express
Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the San Francisco Bay Area.
-
C.
Transbay Tube
The Transbay Tube is an underwater rail tunnel beneath San Francisco Bay that carries BART trains between San Francisco and Oakland.
-
D.
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.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69bd4648883481909e9775d43300c5fa |
completed | March 20, 2026, 1:06 p.m. |
| NER | Named-entity recognition | batch_69bd9260d90c819087f34ab24662575d |
completed | March 20, 2026, 6:30 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69bf48a773f48190b9928a96ae2c17f8 |
completed | March 22, 2026, 1:40 a.m. |
Created at: March 20, 2026, 2:10 p.m.