Triple

T1608616
Position Surface form Disambiguated ID Type / Status
Subject Watertown Square E34563 entity
Predicate servedBy P82 FINISHED
Object MBTA bus route 502
MBTA bus route 502 is an express bus line in the Boston area that connects Watertown and downtown Boston, primarily serving commuters along the Massachusetts Turnpike corridor.
E190488 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: MBTA bus route 502 | Statement: [Watertown Square, servedBy, MBTA bus route 502]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: MBTA bus route 502
Context triple: [Watertown Square, servedBy, MBTA bus route 502]
  • A. MBTA bus route 52
    MBTA bus route 52 is a Massachusetts Bay Transportation Authority bus line serving parts of Newton and Watertown in the Greater Boston area.
  • B. MBTA bus route 57
    MBTA bus route 57 is a key Boston-area bus line that connects downtown Boston with Allston, Brighton, and Watertown, serving as a major transit corridor along Commonwealth Avenue and beyond.
  • C. MBTA bus route 28
    MBTA bus route 28 is a major Boston-area bus line that runs along Blue Hill Avenue and Warren Street, connecting Mattapan and Roxbury to downtown transit hubs and serving some of the system’s highest-ridership corridors.
  • D. MBTA bus route 70
    MBTA bus route 70 is a Massachusetts Bay Transportation Authority bus line that runs between Cambridge and Waltham, serving several communities along the Charles River corridor.
  • E. MBTA bus route 71
    MBTA bus route 71 is a Massachusetts Bay Transportation Authority bus line that primarily operates between Harvard Square in Cambridge and Watertown, serving neighborhoods along Mount Auburn Street.
  • 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: MBTA bus route 502
Triple: [Watertown Square, servedBy, MBTA bus route 502]
Generated description
MBTA bus route 502 is an express bus line in the Boston area that connects Watertown and downtown Boston, primarily serving commuters along the Massachusetts Turnpike corridor.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: MBTA bus route 502
Target entity description: MBTA bus route 502 is an express bus line in the Boston area that connects Watertown and downtown Boston, primarily serving commuters along the Massachusetts Turnpike corridor.
  • A. MBTA bus route 52
    MBTA bus route 52 is a Massachusetts Bay Transportation Authority bus line serving parts of Newton and Watertown in the Greater Boston area.
  • B. MBTA bus route 57
    MBTA bus route 57 is a key Boston-area bus line that connects downtown Boston with Allston, Brighton, and Watertown, serving as a major transit corridor along Commonwealth Avenue and beyond.
  • C. MBTA bus route 28
    MBTA bus route 28 is a major Boston-area bus line that runs along Blue Hill Avenue and Warren Street, connecting Mattapan and Roxbury to downtown transit hubs and serving some of the system’s highest-ridership corridors.
  • D. MBTA bus route 70
    MBTA bus route 70 is a Massachusetts Bay Transportation Authority bus line that runs between Cambridge and Waltham, serving several communities along the Charles River corridor.
  • E. MBTA bus route 71
    MBTA bus route 71 is a Massachusetts Bay Transportation Authority bus line that primarily operates between Harvard Square in Cambridge and Watertown, serving neighborhoods along Mount Auburn Street.
  • 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_69a885fea6a481909fe83ba6441f1774 completed March 4, 2026, 7:20 p.m.
NER Named-entity recognition batch_69a9096e45408190b99e51df5b4a1cee completed March 5, 2026, 4:41 a.m.
NED1 Entity disambiguation (via context triple) batch_69ad79813b2c819093bf3833db398f22 completed March 8, 2026, 1:28 p.m.
NEDg Description generation batch_69ad79ed9e088190af70b57ef85609b9 completed March 8, 2026, 1:30 p.m.
NED2 Entity disambiguation (via description) batch_69ad7a42bb5c8190858adc55200151ec completed March 8, 2026, 1:31 p.m.
Created at: March 4, 2026, 7:28 p.m.