Triple

T1127908
Position Surface form Disambiguated ID Type / Status
Subject Park Street E24761 entity
Predicate servesBranch P1204 FINISHED
Object Green Line E branch
The Green Line E branch is a light rail service of Boston's MBTA Green Line that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street in Jamaica Plain.
E205394 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: Green Line E branch | Statement: [Park Street, servesBranch, Green Line E branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Green Line E branch
Context triple: [Park Street, servesBranch, Green Line E branch]
  • A. Green Line B branch
    The Green Line B branch is a light rail service of Boston's MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
  • B. 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.
  • C. 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.
  • D. Green Line
    Green Line is a hybrid-oriented trim level of the Saturn Aura midsize sedan designed to offer improved fuel efficiency and lower emissions.
  • E. 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.
  • 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
Triple: [Park Street, servesBranch, Green Line E branch]
Generated description
The Green Line E branch is a light rail service of Boston's MBTA Green Line that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street in Jamaica Plain.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Green Line E branch
Target entity description: The Green Line E branch is a light rail service of Boston's MBTA Green Line that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street in Jamaica Plain.
  • A. Green Line B branch
    The Green Line B branch is a light rail service of Boston's MBTA Green Line that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
  • B. 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.
  • C. Green Line
    Green Line is a hybrid-oriented trim level of the Saturn Aura midsize sedan designed to offer improved fuel efficiency and lower emissions.
  • D. 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.
  • E. 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.
  • 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_69a4940712c88190aa244f3fc6070a65 completed March 1, 2026, 7:31 p.m.
NER Named-entity recognition batch_69a4bbdd39b88190bf46de38818fe2df completed March 1, 2026, 10:21 p.m.
NED1 Entity disambiguation (via context triple) batch_69adc97fe2808190b421329ed239af6f completed March 8, 2026, 7:09 p.m.
NEDg Description generation batch_69adcaed1f788190b14c3e2d2c3036d9 completed March 8, 2026, 7:15 p.m.
NED2 Entity disambiguation (via description) batch_69adcbee97e88190adc1315c0a5013ab completed March 8, 2026, 7:20 p.m.
Created at: March 1, 2026, 7:44 p.m.