Triple
T8726497
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Union Station (Los Angeles) |
E207142
|
entity |
| Predicate | metroLines |
P17559
|
FINISHED |
| Object |
Metro E Line (Gold/Expo connection via A Line)
The Metro E Line (Gold/Expo connection via A Line) is a Los Angeles Metro Rail light rail service that links the former Gold and Expo Lines through downtown, providing a continuous east–west transit corridor across the city.
|
E40367
|
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: Metro E Line (Gold/Expo connection via A Line) | Statement: [Union Station (Los Angeles), metroLines, Metro E Line (Gold/Expo connection via A Line)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metro E Line (Gold/Expo connection via A Line) Context triple: [Union Station (Los Angeles), metroLines, Metro E Line (Gold/Expo connection via A Line)]
-
A.
Metro E Line
The Metro E Line is a light rail line in Los Angeles that runs between East Los Angeles and Santa Monica, providing a major east–west transit corridor across the city.
-
B.
Metro A Line
The Metro A Line is a light rail line in Los Angeles County that runs between downtown Los Angeles and Long Beach as part of the region’s Metro Rail system.
-
C.
Metro B Line
The Metro B Line is a heavy rail subway line in Los Angeles that runs through central and Hollywood areas as part of the LA Metro Rail system.
-
D.
Metro D Line
The Metro D Line is a light rail line in the Los Angeles Metro Rail system, serving the city’s central and surrounding areas as part of its expanding transit network.
-
E.
Metro L Line (under construction or reconfiguration)
The Metro L Line is a light rail line in Los Angeles County’s Metro Rail system that is currently being reconfigured as part of a broader network restructuring and expansion.
- 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: Metro E Line (Gold/Expo connection via A Line) Triple: [Union Station (Los Angeles), metroLines, Metro E Line (Gold/Expo connection via A Line)]
Generated description
The Metro E Line (Gold/Expo connection via A Line) is a Los Angeles Metro Rail light rail service that links the former Gold and Expo Lines through downtown, providing a continuous east–west transit corridor across the city.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Metro E Line (Gold/Expo connection via A Line) Target entity description: The Metro E Line (Gold/Expo connection via A Line) is a Los Angeles Metro Rail light rail service that links the former Gold and Expo Lines through downtown, providing a continuous east–west transit corridor across the city.
-
A.
Metro E Line
chosen
The Metro E Line is a light rail line in Los Angeles that runs between East Los Angeles and Santa Monica, providing a major east–west transit corridor across the city.
-
B.
Metro A Line
The Metro A Line is a light rail line in Los Angeles County that runs between downtown Los Angeles and Long Beach as part of the region’s Metro Rail system.
-
C.
Metro B Line
The Metro B Line is a heavy rail subway line in Los Angeles that runs through central and Hollywood areas as part of the LA Metro Rail system.
-
D.
Metro D Line
The Metro D Line is a light rail line in the Los Angeles Metro Rail system, serving the city’s central and surrounding areas as part of its expanding transit network.
-
E.
Metro L Line (under construction or reconfiguration)
The Metro L Line is a light rail line in Los Angeles County’s Metro Rail system that is currently being reconfigured as part of a broader network restructuring and expansion.
- F. None of above.
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_69ca835811d8819081ea00fd2a2c9a1c |
completed | March 30, 2026, 2:06 p.m. |
| NER | Named-entity recognition | batch_69cc5d16cba881908e2a14b60ae65524 |
completed | March 31, 2026, 11:47 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69cf2912c4e08190a147fc31db6788d1 |
completed | April 3, 2026, 2:42 a.m. |
| NEDg | Description generation | batch_69cf2bd42e6081908e016303eeb2241f |
completed | April 3, 2026, 2:54 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69cf2ce47b748190b883063dc3e5d16b |
completed | April 3, 2026, 2:58 a.m. |
Created at: March 30, 2026, 6:36 p.m.