Triple

T18309867
Position Surface form Disambiguated ID Type / Status
Subject Hakkoda Mountains incident E438591 entity
Predicate involved P1063 FINISHED
Object Imperial Japanese Army 5th Infantry Regiment — NE NERFINISHED

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: Imperial Japanese Army 5th Infantry Regiment | Statement: [Hakkoda Mountains incident, involved, Imperial Japanese Army 5th Infantry Regiment]

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: Imperial Japanese Army 5th Infantry Regiment
Context triple: [Hakkoda Mountains incident, involved, Imperial Japanese Army 5th Infantry Regiment]
  • A. Japanese 55th Division
    The Japanese 55th Division was an Imperial Japanese Army infantry division that fought in the Burma Campaign of World War II, notably participating in early offensives against Allied forces in 1942.
  • B. Japanese 1st Independent Mixed Regiment
    The Japanese 1st Independent Mixed Regiment was an Imperial Japanese Army unit that fought in the Pacific Theater during World War II, notably defending Los Negros Island against Allied forces.
  • C. Japanese 5th Division
    The Japanese 5th Division was an Imperial Japanese Army infantry division that saw extensive combat in the Second Sino-Japanese War and World War II, noted for its role in major early campaigns in China and Southeast Asia.
  • D. Japanese 228th Infantry Regiment
    The Japanese 228th Infantry Regiment was an Imperial Japanese Army unit that took part in World War II campaigns in the Pacific, including operations in Southeast Asia.
  • E. Japanese 25th Army
    The Japanese 25th Army was an Imperial Japanese Army formation best known for leading the rapid conquest of Malaya and Singapore during World War II.
  • 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: Imperial Japanese Army 5th Infantry Regiment
Target entity description: The Imperial Japanese Army 5th Infantry Regiment was a unit of Japan’s pre–World War II land forces, historically noted for its tragic role in the 1902 Hakkoda Mountains training disaster.
  • A. Japanese 55th Division
    The Japanese 55th Division was an Imperial Japanese Army infantry division that fought in the Burma Campaign of World War II, notably participating in early offensives against Allied forces in 1942.
  • B. Japanese 1st Independent Mixed Regiment
    The Japanese 1st Independent Mixed Regiment was an Imperial Japanese Army unit that fought in the Pacific Theater during World War II, notably defending Los Negros Island against Allied forces.
  • C. Japanese 5th Division
    The Japanese 5th Division was an Imperial Japanese Army infantry division that saw extensive combat in the Second Sino-Japanese War and World War II, noted for its role in major early campaigns in China and Southeast Asia.
  • D. Japanese 228th Infantry Regiment
    The Japanese 228th Infantry Regiment was an Imperial Japanese Army unit that took part in World War II campaigns in the Pacific, including operations in Southeast Asia.
  • E. Japanese 25th Army
    The Japanese 25th Army was an Imperial Japanese Army formation best known for leading the rapid conquest of Malaya and Singapore during World War II.
  • F. None of above. chosen

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69d8b915e3e881909125d760c15d0c29 elicitation completed
NER batch_69e5021709f88190a8047dd57edc2029 ner completed
Created at: April 10, 2026, 10:36 a.m.