Triple

T7882645
Position Surface form Disambiguated ID Type / Status
Subject Franklin Line E183016 entity
Predicate ownedInfrastructure P5683 FINISHED
Object MBTA Franklin Branch
The MBTA Franklin Branch is a commuter rail corridor in Massachusetts that carries Franklin Line trains between Boston and the southwestern suburbs.
 E705901 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 Franklin Branch | Statement: [Franklin Line, ownedInfrastructure, MBTA Franklin Branch]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: MBTA Franklin Branch
Context triple: [Franklin Line, ownedInfrastructure, MBTA Franklin Branch]
  • A. MBTA Ashmont Branch
    The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
  • B. MBTA Braintree Branch
    The MBTA Braintree Branch is a southern extension of Boston’s Red Line rapid transit system that runs from JFK/UMass through several South Shore communities to Braintree.
  • C. MBTA Fairmount Line
    The MBTA Fairmount Line is a commuter rail service in Boston, Massachusetts, connecting several neighborhoods in the city’s southern corridor to downtown.
  • D. MBTA Lowell Line
    The MBTA Lowell Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority that runs between Boston’s North Station and Lowell, serving several communities in northern Massachusetts.
  • E. MBTA Kingston Line
    The MBTA Kingston Line is a commuter rail line in Massachusetts that provides service between Boston and the South Shore communities, terminating in Kingston.
  • 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 Franklin Branch
Triple: [Franklin Line, ownedInfrastructure, MBTA Franklin Branch]
Generated description
The MBTA Franklin Branch is a commuter rail corridor in Massachusetts that carries Franklin Line trains between Boston and the southwestern suburbs.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: MBTA Franklin Branch
Target entity description: The MBTA Franklin Branch is a commuter rail corridor in Massachusetts that carries Franklin Line trains between Boston and the southwestern suburbs.
  • A. MBTA Ashmont Branch
    The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
  • B. MBTA Braintree Branch
    The MBTA Braintree Branch is a southern extension of Boston’s Red Line rapid transit system that runs from JFK/UMass through several South Shore communities to Braintree.
  • C. MBTA Fairmount Line
    The MBTA Fairmount Line is a commuter rail service in Boston, Massachusetts, connecting several neighborhoods in the city’s southern corridor to downtown.
  • D. MBTA Lowell Line
    The MBTA Lowell Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority that runs between Boston’s North Station and Lowell, serving several communities in northern Massachusetts.
  • E. MBTA Kingston Line
    The MBTA Kingston Line is a commuter rail line in Massachusetts that provides service between Boston and the South Shore communities, terminating in Kingston.
  • 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_69ca828af6e48190a06ee7010d8f0e64 completed March 30, 2026, 2:02 p.m.
NER Named-entity recognition batch_69cb39d36574819092d70e24c37952d7 completed March 31, 2026, 3:04 a.m.
NED1 Entity disambiguation (via context triple) batch_69cc5625c7a48190956778b949ab6d23 completed March 31, 2026, 11:17 p.m.
NEDg Description generation batch_69cc5822581481908a143376bee599ec completed March 31, 2026, 11:26 p.m.
NED2 Entity disambiguation (via description) batch_69cc58f549388190ba6c8b41c0820cd6 completed March 31, 2026, 11:29 p.m.
Created at: March 30, 2026, 4:58 p.m.