Triple

T570633
Position Surface form Disambiguated ID Type / Status
Subject Green Line (Washington Metro) E13654 entity
Predicate station P726 FINISHED
Object U Street/African-Amer Civil War Memorial/Cardozo station
U Street/African-Amer Civil War Memorial/Cardozo station is a Washington Metro stop in the U Street neighborhood of Washington, D.C., serving as a key transit access point to nearby historic and cultural landmarks.
 E71534 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: U Street/African-Amer Civil War Memorial/Cardozo station | Statement: [Green Line (Washington Metro), station, U Street/African-Amer Civil War Memorial/Cardozo station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: U Street/African-Amer Civil War Memorial/Cardozo station
Context triple: [Green Line (Washington Metro), station, U Street/African-Amer Civil War Memorial/Cardozo station]
  • A. Sullivan Square station
    Sullivan Square station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains and numerous bus routes that connect the city and surrounding areas.
  • B. Dupont Circle station
    Dupont Circle station is a Washington, D.C. Metro station on the Red Line serving the Dupont Circle neighborhood and nearby areas such as Kalorama.
  • C. 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.
  • D. Archives–Navy Memorial–Penn Quarter station
    Archives–Navy Memorial–Penn Quarter station is a Washington Metro subway station in downtown Washington, D.C., serving the Archives, U.S. Navy Memorial, and the Penn Quarter neighborhood.
  • E. Columbia Heights station
    Columbia Heights station is a Washington, D.C. Metro stop on the Green and Yellow lines serving the Columbia Heights neighborhood and nearby Adams Morgan area.
  • 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: U Street/African-Amer Civil War Memorial/Cardozo station
Triple: [Green Line (Washington Metro), station, U Street/African-Amer Civil War Memorial/Cardozo station]
Generated description
U Street/African-Amer Civil War Memorial/Cardozo station is a Washington Metro stop in the U Street neighborhood of Washington, D.C., serving as a key transit access point to nearby historic and cultural landmarks.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: U Street/African-Amer Civil War Memorial/Cardozo station
Target entity description: U Street/African-Amer Civil War Memorial/Cardozo station is a Washington Metro stop in the U Street neighborhood of Washington, D.C., serving as a key transit access point to nearby historic and cultural landmarks.
  • A. Sullivan Square station
    Sullivan Square station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains and numerous bus routes that connect the city and surrounding areas.
  • B. Dupont Circle station
    Dupont Circle station is a Washington, D.C. Metro station on the Red Line serving the Dupont Circle neighborhood and nearby areas such as Kalorama.
  • C. 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.
  • D. Archives–Navy Memorial–Penn Quarter station
    Archives–Navy Memorial–Penn Quarter station is a Washington Metro subway station in downtown Washington, D.C., serving the Archives, U.S. Navy Memorial, and the Penn Quarter neighborhood.
  • E. Columbia Heights station
    Columbia Heights station is a Washington, D.C. Metro stop on the Green and Yellow lines serving the Columbia Heights neighborhood and nearby Adams Morgan area.
  • 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_69a4fc8475d881909e80d60fbb50c271 completed March 2, 2026, 2:57 a.m.
NEDg Description generation batch_69a4fd2938288190b00cb79a10d91150 completed March 2, 2026, 2:59 a.m.
NED2 Entity disambiguation (via description) batch_69a4fdb5f42c81908ce753cd4283962c completed March 2, 2026, 3:02 a.m.
Created at: March 1, 2026, 7:33 p.m.