Triple

T11324051
Position Surface form Disambiguated ID Type / Status
Subject Anacostia Tributary Trail System E268163 entity
Predicate parallels P1868 FINISHED
Object Northwest Branch Anacostia River
The Northwest Branch Anacostia River is a major tributary of the Anacostia River in Maryland and Washington, D.C., flowing through parkland and suburban communities and supporting popular recreational trails along its banks.
E922656 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: Northwest Branch Anacostia River | Statement: [Anacostia Tributary Trail System, parallels, Northwest Branch Anacostia River]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Northwest Branch Anacostia River
Context triple: [Anacostia Tributary Trail System, parallels, Northwest Branch Anacostia River]
  • A. Anacostia River
    The Anacostia River is a tidal river in the Washington, D.C. area known for its historical significance, urban setting, and long-running environmental restoration efforts.
  • B. Patapsco River
    The Patapsco River is a major waterway in central Maryland that flows into the Chesapeake Bay and forms the harbor of Baltimore.
  • C. South Branch Patapsco River
    The South Branch Patapsco River is a principal headwater stream of Maryland’s Patapsco River, flowing through rural and forested areas before contributing to the river system that ultimately feeds into the Chesapeake Bay.
  • D. Occoquan River
    The Occoquan River is a tributary of the Potomac River in northern Virginia, known for its role in regional water supply, recreation, and the historic town of Occoquan along its banks.
  • E. Accokeek Creek
    Accokeek Creek is a small waterway in southern Maryland that flows through the Accokeek area toward the Potomac River, contributing to the region’s local watershed and natural landscape.
  • 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: Northwest Branch Anacostia River
Triple: [Anacostia Tributary Trail System, parallels, Northwest Branch Anacostia River]
Generated description
The Northwest Branch Anacostia River is a major tributary of the Anacostia River in Maryland and Washington, D.C., flowing through parkland and suburban communities and supporting popular recreational trails along its banks.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Northwest Branch Anacostia River
Target entity description: The Northwest Branch Anacostia River is a major tributary of the Anacostia River in Maryland and Washington, D.C., flowing through parkland and suburban communities and supporting popular recreational trails along its banks.
  • A. Anacostia River
    The Anacostia River is a tidal river in the Washington, D.C. area known for its historical significance, urban setting, and long-running environmental restoration efforts.
  • B. Patapsco River
    The Patapsco River is a major waterway in central Maryland that flows into the Chesapeake Bay and forms the harbor of Baltimore.
  • C. South Branch Patapsco River
    The South Branch Patapsco River is a principal headwater stream of Maryland’s Patapsco River, flowing through rural and forested areas before contributing to the river system that ultimately feeds into the Chesapeake Bay.
  • D. Occoquan River
    The Occoquan River is a tributary of the Potomac River in northern Virginia, known for its role in regional water supply, recreation, and the historic town of Occoquan along its banks.
  • E. Accokeek Creek
    Accokeek Creek is a small waterway in southern Maryland that flows through the Accokeek area toward the Potomac River, contributing to the region’s local watershed and natural landscape.
  • 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_69d6aacb1f0881908c84a349fd1be047 completed April 8, 2026, 7:21 p.m.
NER Named-entity recognition batch_69d7e9e122e48190b3f890de8d561480 completed April 9, 2026, 6:03 p.m.
NED1 Entity disambiguation (via context triple) batch_69e58b4ec4ac81908d51e3815a054704 completed April 20, 2026, 2:11 a.m.
NEDg Description generation batch_69e59323c5948190bc2c9512f7b0a54f completed April 20, 2026, 2:44 a.m.
NED2 Entity disambiguation (via description) batch_69e599c53704819097c0fdbbfbbb1e87 completed April 20, 2026, 3:13 a.m.
Created at: April 8, 2026, 9:32 p.m.