Triple

T13979570
Position Surface form Disambiguated ID Type / Status
Subject Battle of Con Thien E336271 entity
Predicate relatedTo P37 FINISHED
Object McNamara Line
The McNamara Line was a U.S. electronic barrier system of sensors, mines, and fortifications built during the Vietnam War along the Demilitarized Zone to detect and impede North Vietnamese infiltration.
 E1072262 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: McNamara Line | Statement: [Battle of Con Thien, relatedTo, McNamara Line]

Disambiguation candidates (2 decisions)

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: McNamara Line
Context triple: [Battle of Con Thien, relatedTo, McNamara Line]
  • A. Dyle Line
    The Dyle Line was a key Belgian defensive position along the Dyle River that formed the centerpiece of Allied plans to halt the German advance during the 1940 campaign in Western Europe.
  • B. Bergen Line
    The Bergen Line is a major Norwegian railway route crossing the mountainous terrain between Oslo and Bergen, renowned for its scenic landscapes and high-altitude segments.
  • C. Coast-to-Coast Line
    The Coast-to-Coast Line is a major Swedish railway route that connects the country’s west and east coasts, linking Gothenburg with cities such as Kalmar and Karlskrona.
  • D. Maritime Line
    Maritime Line is a regional railway service in Cornwall, England, connecting Falmouth with the mainline rail network.
  • E. Bridge Line
    Bridge Line was a former rapid transit service in the Philadelphia–Camden area that operated across the Benjamin Franklin Bridge before being replaced and expanded by the PATCO Speedline.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: McNamara Line
Target entity description: The McNamara Line was a U.S. electronic barrier system of sensors, mines, and fortifications built during the Vietnam War along the Demilitarized Zone to detect and impede North Vietnamese infiltration.
  • A. Dyle Line
    The Dyle Line was a key Belgian defensive position along the Dyle River that formed the centerpiece of Allied plans to halt the German advance during the 1940 campaign in Western Europe.
  • B. Bergen Line
    The Bergen Line is a major Norwegian railway route crossing the mountainous terrain between Oslo and Bergen, renowned for its scenic landscapes and high-altitude segments.
  • C. Coast-to-Coast Line
    The Coast-to-Coast Line is a major Swedish railway route that connects the country’s west and east coasts, linking Gothenburg with cities such as Kalmar and Karlskrona.
  • D. Maritime Line
    Maritime Line is a regional railway service in Cornwall, England, connecting Falmouth with the mainline rail network.
  • E. Bridge Line
    Bridge Line was a former rapid transit service in the Philadelphia–Camden area that operated across the Benjamin Franklin Bridge before being replaced and expanded by the PATCO Speedline.
  • F. None of above. chosen

How the object was described

The object's one-sentence description was generated by prompting gpt-5.1 with the object name and this triple as context.

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: McNamara Line
Triple: [Battle of Con Thien, relatedTo, McNamara Line]
Generated description
The McNamara Line was a U.S. electronic barrier system of sensors, mines, and fortifications built during the Vietnam War along the Demilitarized Zone to detect and impede North Vietnamese infiltration.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69d81c639e808190a0e4b4f3d31c6a59 elicitation completed
NER batch_69de2e9fc7248190a9f26e253286ac3c ner completed
NED1 batch_69fba1e3cafc8190a1806a29b2e46ae9 ned_source_triple completed
NED2 batch_69fba8585fb08190998d6a005dc0bd31 ned_description completed
NEDg batch_69fba74a96b08190a08c51c231e49e5d nedg completed
Created at: April 9, 2026, 10:18 p.m.