Triple

T8657871
Position Surface form Disambiguated ID Type / Status
Subject Severn Sound E205467 entity
Predicate connectedTo P37 FINISHED
Object Severn River E232663 NE FINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Severn River | Statement: [Severn Sound, connectedTo, Severn River]

Disambiguation candidates (1 decision)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Severn River
Context triple: [Severn Sound, connectedTo, Severn River]
  • A. Severn River
    The Severn River is a tidal estuary in Maryland that flows into the Chesapeake Bay and is known for bordering the city of Annapolis and the U.S. Naval Academy.
  • B. Severn River chosen
    The Severn River is a major river in northern Ontario, Canada, that flows into Hudson Bay and has historically served as an important route for Indigenous peoples and the fur trade.
  • C. Choptank River
    The Choptank River is a major tributary on the Eastern Shore of Maryland that flows through rural and tidal landscapes before emptying into the Chesapeake Bay.
  • D. Severn River system
    The Severn River system is the interconnected network of the River Severn and its tributaries, forming one of the major drainage basins in Great Britain.
  • E. Rappahannock River
    The Rappahannock River is a major waterway in eastern Virginia that flows from the Blue Ridge Mountains to the Chesapeake Bay and played a significant role in American colonial history and the Civil War.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69ca8350897c819086cde7596fbe5fe7 elicitation completed
NER batch_69cc486d576081908ad28749c7971432 ner completed
NED1 batch_69cfb9f8cce48190b02f3237be91590e ned_source_triple completed
Created at: March 30, 2026, 6:30 p.m.