Triple
T4927953
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | San Francisco Muni historic streetcars |
E110622
|
entity |
| Predicate | usesOnLine |
P36093
|
FINISHED |
| Object |
E Embarcadero line
The E Embarcadero line is a San Francisco Muni heritage streetcar route that runs along the city’s waterfront, connecting key destinations like Fisherman’s Wharf and the Caltrain station.
|
E480902
|
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: E Embarcadero line | Statement: [San Francisco Muni historic streetcars, usesOnLine, E Embarcadero line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: E Embarcadero line Context triple: [San Francisco Muni historic streetcars, usesOnLine, E Embarcadero line]
-
A.
T Line
The T Line is a streetcar-style light rail route within the Sound Transit Link system serving Tacoma, Washington.
-
B.
MARC Penn Line
The MARC Penn Line is a Maryland commuter rail service that runs along the Amtrak Northeast Corridor between Washington, D.C., and Perryville, serving numerous communities in Prince George’s County and beyond.
-
C.
S Line
The S Line is a route within the Sounder commuter rail system that provides passenger rail service in the Seattle metropolitan area.
-
D.
S Line
The S Line is a modern streetcar route in the Salt Lake City area that provides local transit service and links neighborhoods to the broader TRAX light rail network.
-
E.
L Line
The L Line was a light rail route in the Los Angeles Metro Rail system that connected communities across the San Gabriel Valley and Eastside before being integrated into other lines.
- 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: E Embarcadero line Triple: [San Francisco Muni historic streetcars, usesOnLine, E Embarcadero line]
Generated description
The E Embarcadero line is a San Francisco Muni heritage streetcar route that runs along the city’s waterfront, connecting key destinations like Fisherman’s Wharf and the Caltrain station.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: E Embarcadero line Target entity description: The E Embarcadero line is a San Francisco Muni heritage streetcar route that runs along the city’s waterfront, connecting key destinations like Fisherman’s Wharf and the Caltrain station.
-
A.
T Line
The T Line is a streetcar-style light rail route within the Sound Transit Link system serving Tacoma, Washington.
-
B.
MARC Penn Line
The MARC Penn Line is a Maryland commuter rail service that runs along the Amtrak Northeast Corridor between Washington, D.C., and Perryville, serving numerous communities in Prince George’s County and beyond.
-
C.
S Line
The S Line is a route within the Sounder commuter rail system that provides passenger rail service in the Seattle metropolitan area.
-
D.
S Line
The S Line is a modern streetcar route in the Salt Lake City area that provides local transit service and links neighborhoods to the broader TRAX light rail network.
-
E.
L Line
The L Line was a light rail route in the Los Angeles Metro Rail system that connected communities across the San Gabriel Valley and Eastside before being integrated into other lines.
- 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_69bd4415190c8190817bee7ec9f9f944 |
completed | March 20, 2026, 12:56 p.m. |
| NER | Named-entity recognition | batch_69bd716520f08190862249efb2058fd4 |
completed | March 20, 2026, 4:10 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69be77ac88148190a51fa2e9085d6897 |
completed | March 21, 2026, 10:49 a.m. |
| NEDg | Description generation | batch_69be7847a378819081687ec783a8b862 |
completed | March 21, 2026, 10:51 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69be7915a26c81909b21a128daebf5b3 |
completed | March 21, 2026, 10:55 a.m. |
Created at: March 20, 2026, 1:30 p.m.