Triple

T850753
Position Surface form Disambiguated ID Type / Status
Subject MBTA Green Line E branch E18379 entity
Predicate terminus P388 FINISHED
Object Heath Street
Heath Street is a light rail station in Boston, Massachusetts, serving as the southern terminus of the MBTA Green Line E branch.
E214615 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: Heath Street | Statement: [MBTA Green Line E branch, terminus, Heath Street]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Heath Street
Context triple: [MBTA Green Line E branch, terminus, Heath Street]
  • A. Pine Street
    Pine Street is a major east–west thoroughfare in Philadelphia known for its historic rowhouses and role as a key residential and cultural corridor in Center City.
  • B. Pine Street
    Pine Street is a major east–west thoroughfare running through San Francisco’s Financial District, lined with office towers, financial institutions, and historic buildings.
  • C. Monroe Street
    Monroe Street is a major east–west thoroughfare in downtown Chicago, Illinois, running through the city’s central business and cultural districts.
  • D. Addison Street
    Addison Street is a major east–west thoroughfare on Chicago’s North Side, running through neighborhoods such as Lakeview and passing near landmarks like Wrigley Field.
  • E. Madison Street
    Madison Street is a major east–west thoroughfare in downtown Chicago, Illinois, serving as a key dividing line for the city’s street numbering system.
  • 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: Heath Street
Triple: [MBTA Green Line E branch, terminus, Heath Street]
Generated description
Heath Street is a light rail station in Boston, Massachusetts, serving as the southern terminus of the MBTA Green Line E branch.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Heath Street
Target entity description: Heath Street is a light rail station in Boston, Massachusetts, serving as the southern terminus of the MBTA Green Line E branch.
  • A. Pine Street
    Pine Street is a major east–west thoroughfare in Philadelphia known for its historic rowhouses and role as a key residential and cultural corridor in Center City.
  • B. Pine Street
    Pine Street is a major east–west thoroughfare running through San Francisco’s Financial District, lined with office towers, financial institutions, and historic buildings.
  • C. Monroe Street
    Monroe Street is a major east–west thoroughfare in downtown Chicago, Illinois, running through the city’s central business and cultural districts.
  • D. Addison Street
    Addison Street is a major east–west thoroughfare on Chicago’s North Side, running through neighborhoods such as Lakeview and passing near landmarks like Wrigley Field.
  • E. Madison Street
    Madison Street is a major east–west thoroughfare in downtown Chicago, Illinois, serving as a key dividing line for the city’s street numbering 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_69a4938b04208190b82e1df6b572c548 completed March 1, 2026, 7:29 p.m.
NER Named-entity recognition batch_69a4ac215194819099e6bc1b5df58fb3 completed March 1, 2026, 9:14 p.m.
NED1 Entity disambiguation (via context triple) batch_69adf3a24d9c8190926a3946a89105e1 completed March 8, 2026, 10:09 p.m.
NEDg Description generation batch_69adf431c3a88190971f61d53c2bad2e completed March 8, 2026, 10:12 p.m.
NED2 Entity disambiguation (via description) batch_69adf4bdb6dc8190964e5e78abfb8e40 completed March 8, 2026, 10:14 p.m.
Created at: March 1, 2026, 7:38 p.m.