Triple

T570625
Position Surface form Disambiguated ID Type / Status
Subject Green Line (Washington Metro) E13654 entity
Predicate terminusSouth P1866 FINISHED
Object Branch Avenue station
Branch Avenue station is a Washington Metro rail station in Maryland that serves as the southern terminus of the system’s Green Line.
 E91883 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: Branch Avenue station | Statement: [Green Line (Washington Metro), terminusSouth, Branch Avenue station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Branch Avenue station
Context triple: [Green Line (Washington Metro), terminusSouth, Branch Avenue station]
  • A. Pattison Avenue station
    Pattison Avenue station is a subway station in Philadelphia that serves as the southern terminus of SEPTA’s Broad Street Line, providing access to the South Philadelphia Sports Complex.
  • B. Eisenhower Avenue station
    Eisenhower Avenue station is a Washington Metro rapid transit stop serving the Yellow Line in Alexandria, Virginia, near the Eisenhower Avenue corridor and adjacent commercial and residential areas.
  • C. Crescent Street station
    Crescent Street station is a New York City Subway station in Brooklyn served by the J train.
  • D. Heath Street station
    Heath Street station is the southern terminus of the MBTA Green Line E branch, serving Boston’s Mission Hill neighborhood with light rail service.
  • E. 13th Street station
    13th Street station is a major underground transit stop in Center City Philadelphia serving SEPTA’s Subway–Surface Trolley Lines and connecting to other regional rail and subway services.
  • 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: Branch Avenue station
Triple: [Green Line (Washington Metro), terminusSouth, Branch Avenue station]
Generated description
Branch Avenue station is a Washington Metro rail station in Maryland that serves as the southern terminus of the system’s Green Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Branch Avenue station
Target entity description: Branch Avenue station is a Washington Metro rail station in Maryland that serves as the southern terminus of the system’s Green Line.
  • A. Pattison Avenue station
    Pattison Avenue station is a subway station in Philadelphia that serves as the southern terminus of SEPTA’s Broad Street Line, providing access to the South Philadelphia Sports Complex.
  • B. Eisenhower Avenue station
    Eisenhower Avenue station is a Washington Metro rapid transit stop serving the Yellow Line in Alexandria, Virginia, near the Eisenhower Avenue corridor and adjacent commercial and residential areas.
  • C. Crescent Street station
    Crescent Street station is a New York City Subway station in Brooklyn served by the J train.
  • D. Heath Street station
    Heath Street station is the southern terminus of the MBTA Green Line E branch, serving Boston’s Mission Hill neighborhood with light rail service.
  • E. 13th Street station
    13th Street station is a major underground transit stop in Center City Philadelphia serving SEPTA’s Subway–Surface Trolley Lines and connecting to other regional rail and subway services.
  • 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_69a4933fa4d88190a7949cc83c08c5c1 completed March 1, 2026, 7:27 p.m.
NER Named-entity recognition batch_69a49b057e708190b4e5975516e58993 completed March 1, 2026, 8:01 p.m.
NED1 Entity disambiguation (via context triple) batch_69a66d8a3b408190a3851c79aee5e972 completed March 3, 2026, 5:11 a.m.
NEDg Description generation batch_69a66df8ed688190863df45bc46ef4ba completed March 3, 2026, 5:13 a.m.
NED2 Entity disambiguation (via description) batch_69a66e9e2e1c81909591b01ee1984909 completed March 3, 2026, 5:16 a.m.
Created at: March 1, 2026, 7:33 p.m.