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.