Triple

T1670363
Position Surface form Disambiguated ID Type / Status
Subject MBTA bus route 39 E36109 entity
Predicate replacesService P30993 FINISHED
Object Green Line E branch streetcar (surface portion)
The Green Line E branch streetcar (surface portion) is the above-ground segment of Boston’s MBTA Green Line E branch that historically ran along Huntington Avenue and surrounding streets, serving local neighborhoods with light rail service.
E188354 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: Green Line E branch streetcar (surface portion) | Statement: [MBTA bus route 39, replacesService, Green Line E branch streetcar (surface portion)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Green Line E branch streetcar (surface portion)
Context triple: [MBTA bus route 39, replacesService, Green Line E branch streetcar (surface portion)]
  • A. MAX Green Line
    MAX Green Line is a light rail service in the Portland, Oregon metropolitan area that connects downtown Portland with Clackamas Town Center as part of TriMet’s MAX Light Rail system.
  • B. Green Line
    The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
  • C. Green Line
    The Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides as part of the Chicago "L" system.
  • D. Green Line
    The Green Line is one of the color-coded routes of the Tyne and Wear Metro rapid transit system serving the Newcastle upon Tyne area in northeast England.
  • E. Green Line
    The Green Line is one of the main rapid transit routes of the Dubai Metro, serving key districts along Dubai Creek and connecting important commercial and residential areas.
  • 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: Green Line E branch streetcar (surface portion)
Triple: [MBTA bus route 39, replacesService, Green Line E branch streetcar (surface portion)]
Generated description
The Green Line E branch streetcar (surface portion) is the above-ground segment of Boston’s MBTA Green Line E branch that historically ran along Huntington Avenue and surrounding streets, serving local neighborhoods with light rail service.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Green Line E branch streetcar (surface portion)
Target entity description: The Green Line E branch streetcar (surface portion) is the above-ground segment of Boston’s MBTA Green Line E branch that historically ran along Huntington Avenue and surrounding streets, serving local neighborhoods with light rail service.
  • A. MAX Green Line
    MAX Green Line is a light rail service in the Portland, Oregon metropolitan area that connects downtown Portland with Clackamas Town Center as part of TriMet’s MAX Light Rail system.
  • B. Green Line
    The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
  • C. Green Line
    The Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides as part of the Chicago "L" system.
  • D. Green Line
    The Green Line is one of the color-coded routes of the Tyne and Wear Metro rapid transit system serving the Newcastle upon Tyne area in northeast England.
  • E. Green Line
    The Green Line is one of the color-coded rapid transit routes in Atlanta’s MARTA rail system, serving key stations on the city’s east–west corridor.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: replacesService
Context triple: [MBTA bus route 39, replacesService, Green Line E branch streetcar (surface portion)]
  • A. enteredServiceAsReplacementFor
    Indicates that one entity began its period of service specifically to take over the role or function previously performed by another entity.
  • B. replacesComponentOf
    Indicates that one entity takes the place of a specific component within another entity, substituting for that component in its role or function.
  • C. replacedWith
    Indicates that one entity has been substituted or superseded by another entity, taking over its role, function, or position.
  • D. replacementName
    Indicates that one entity serves as a substitute or successor name for another entity, effectively replacing the original designation.
  • E. replacesInPractice chosen
    Indicates that one entity has effectively taken over the role, function, or use of another entity in real-world application or usage.
  • F. None of above.

Provenance (6 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_69a8861286808190939afff3ce8ee31e completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69ab272a653481908f48aa1eed5de8a4 completed March 6, 2026, 7:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69ad683461ec8190b442054443c472b3 completed March 8, 2026, 12:14 p.m.
NEDg Description generation batch_69ad693c04bc8190acc3566472a773f7 completed March 8, 2026, 12:19 p.m.
NED2 Entity disambiguation (via description) batch_69ad69b46fe88190a4dc1568cabc69b6 completed March 8, 2026, 12:21 p.m.
PD Predicate disambiguation batch_69aa61b2f6288190b2348ef7d7e4672d completed March 6, 2026, 5:10 a.m.
Created at: March 4, 2026, 7:29 p.m.