Triple
T1756120
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Metro Rail (Los Angeles) |
E38551
|
entity |
| Predicate | formerLine |
P32801
|
FINISHED |
| Object |
L Line (Los Angeles Metro)
The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
|
E210510
|
NE FINISHED |
How this triple was built (5 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: L Line (Los Angeles Metro) | Statement: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: L Line (Los Angeles Metro) Context triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
-
A.
K Line (Los Angeles Metro)
The K Line is a light rail route in the Los Angeles Metro Rail system serving neighborhoods in South Los Angeles and connecting to major transit hubs.
-
B.
LA Metro A Line
The LA Metro A Line is a light rail line in Los Angeles County that connects downtown Los Angeles with several surrounding communities, including Pasadena and Long Beach.
-
C.
Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
-
D.
Metro J Line
The Metro J Line is a bus rapid transit service in Los Angeles County that provides high-frequency, limited-stop connections along key north-south and east-west corridors.
-
E.
D Line (Los Angeles Metro)
The D Line is a heavy-rail subway route in the Los Angeles Metro system that runs primarily beneath Wilshire Boulevard, connecting downtown Los Angeles with the city’s westside.
- 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: L Line (Los Angeles Metro) Triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
Generated description
The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: L Line (Los Angeles Metro) Target entity description: The L Line was a light rail route in the Los Angeles Metro Rail system that connected East Los Angeles and the San Gabriel Valley to downtown and northeast Los Angeles before being restructured into other lines.
-
A.
K Line (Los Angeles Metro)
The K Line is a light rail route in the Los Angeles Metro Rail system serving neighborhoods in South Los Angeles and connecting to major transit hubs.
-
B.
LA Metro A Line
The LA Metro A Line is a light rail line in Los Angeles County that connects downtown Los Angeles with several surrounding communities, including Pasadena and Long Beach.
-
C.
Los Angeles Metro Rail
Los Angeles Metro Rail is a rapid transit system serving Los Angeles County, California, consisting of multiple light rail and subway lines that connect key neighborhoods, business districts, and regional destinations.
-
D.
Metro J Line
The Metro J Line is a bus rapid transit service in Los Angeles County that provides high-frequency, limited-stop connections along key north-south and east-west corridors.
-
E.
D Line (Los Angeles Metro)
The D Line is a heavy-rail subway route in the Los Angeles Metro system that runs primarily beneath Wilshire Boulevard, connecting downtown Los Angeles with the city’s westside.
- F. None of above. chosen
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: formerLine Context triple: [Metro Rail (Los Angeles), formerLine, L Line (Los Angeles Metro)]
-
A.
formerLineName
Indicates that the object is a previous or former name by which the referenced line was known.
-
B.
formerField
Indicates that an entity previously had a particular field, role, or area of activity, but no longer does.
-
C.
formerScript
Indicates that an entity previously served as the script or writing system for another entity, but is no longer used in that role.
-
D.
formerName
Indicates that an entity was previously known by a different name in the past.
-
E.
frontLine
Indicates that an entity is positioned at or associated with the foremost or primary line of engagement, activity, or defense relative to others.
- F. None of above. chosen
Provenance (7 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_69a8862bdb2081908aefe831c8aa8017 |
completed | March 4, 2026, 7:21 p.m. |
| NER | Named-entity recognition | batch_69aba6a63f588190b53b39c6b97d74f4 |
completed | March 7, 2026, 4:16 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69addf39b08881908d798b3eae51dbae |
completed | March 8, 2026, 8:42 p.m. |
| NEDg | Description generation | batch_69addfb3860481908ff4eebfa3d06fa7 |
completed | March 8, 2026, 8:44 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69ade027072481909b707bbfc47da4de |
completed | March 8, 2026, 8:46 p.m. |
| PD | Predicate disambiguation | batch_69aa61c7ef4c8190abec87c96a787d82 |
completed | March 6, 2026, 5:10 a.m. |
| PDg | Predicate description generation | batch_69aba6a4c84c8190b3ce0bf69c2b5f6d |
completed | March 7, 2026, 4:16 a.m. |
Created at: March 4, 2026, 7:31 p.m.