Triple

T5567783
Position Surface form Disambiguated ID Type / Status
Subject Southern Cross E145920 entity
Predicate contains P35 FINISHED
Object Coalsack Nebula (on its border)
Coalsack Nebula (on its border) is a prominent dark nebula visible to the naked eye in the southern sky, appearing as a large, starless patch silhouetted against the Milky Way.
 E533145 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: Coalsack Nebula (on its border) | Statement: [Southern Cross, contains, Coalsack Nebula (on its border)]

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: Coalsack Nebula (on its border)
Context triple: [Southern Cross, contains, Coalsack Nebula (on its border)]
  • A. Barnard's Loop
    Barnard's Loop is a large, faint emission nebula forming a sweeping arc across the constellation Orion, believed to be the remnant of ancient supernova activity.
  • B. Pelican Nebula
    The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
  • C. Horsehead Nebula
    The Horsehead Nebula is a dark molecular cloud in the constellation Orion, famous for its distinctive horse-head shape silhouetted against a bright emission nebula.
  • D. Swan Nebula
    The Swan Nebula, also known as M17 or the Omega Nebula, is a bright star-forming emission nebula in the constellation Sagittarius, rich in gas, dust, and young massive stars.
  • E. Carina Nebula
    The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
  • 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: Coalsack Nebula (on its border)
Target entity description: Coalsack Nebula (on its border) is a prominent dark nebula visible to the naked eye in the southern sky, appearing as a large, starless patch silhouetted against the Milky Way.
  • A. Barnard's Loop
    Barnard's Loop is a large, faint emission nebula forming a sweeping arc across the constellation Orion, believed to be the remnant of ancient supernova activity.
  • B. Pelican Nebula
    The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
  • C. Horsehead Nebula
    The Horsehead Nebula is a dark molecular cloud in the constellation Orion, famous for its distinctive horse-head shape silhouetted against a bright emission nebula.
  • D. Swan Nebula
    The Swan Nebula, also known as M17 or the Omega Nebula, is a bright star-forming emission nebula in the constellation Sagittarius, rich in gas, dust, and young massive stars.
  • E. Carina Nebula
    The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
  • 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: Coalsack Nebula (on its border)
Triple: [Southern Cross, contains, Coalsack Nebula (on its border)]
Generated description
Coalsack Nebula (on its border) is a prominent dark nebula visible to the naked eye in the southern sky, appearing as a large, starless patch silhouetted against the Milky Way.

Provenance (5 batches)

Stage Batch ID Job type Status
creating batch_69c008fdae24819081aa002ad99cd966 elicitation completed
NER batch_69c0203631c881908978d51e99155014 ner completed
NED1 batch_69c028485ba081908565f7f852278cfc ned_source_triple completed
NED2 batch_69c038e5dccc8190a5e1ec45712c00a3 ned_description completed
NEDg batch_69c0384874d0819082ba855bfe6f2ba4 nedg completed
Created at: March 22, 2026, 3:36 p.m.