Triple

T5202252
Position Surface form Disambiguated ID Type / Status
Subject Milky Way stellar halo E117419 entity
Predicate hasSubstructure P35 FINISHED
Object Virgo Overdensity
The Virgo Overdensity is a large, diffuse concentration of stars in the Milky Way’s outer regions, thought to be the remnant of a disrupted dwarf galaxy or stellar stream.
E502432 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: Virgo Overdensity | Statement: [Milky Way stellar halo, hasSubstructure, Virgo Overdensity]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Virgo Overdensity
Context triple: [Milky Way stellar halo, hasSubstructure, Virgo Overdensity]
  • A. Canis Major Overdensity
    The Canis Major Overdensity is a debated stellar overdensity near the plane of the Milky Way, often interpreted as either the remnant core of a disrupted dwarf galaxy or a warp/flare feature of the Galactic disk.
  • B. CMa Overdensity
    CMa Overdensity is a debated stellar overdensity in the direction of Canis Major, thought by some astronomers to be the remnant of a disrupted dwarf galaxy merging with the Milky Way.
  • C. Virgo Supercluster
    The Virgo Supercluster is a massive galaxy supercluster that contains the Local Group, including the Milky Way, and forms part of the larger Laniakea Supercluster.
  • D. Shapley Supercluster
    The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
  • E. Perseus–Pisces Supercluster
    The Perseus–Pisces Supercluster is a massive, elongated concentration of galaxy clusters stretching hundreds of millions of light-years across space and forming one of the most prominent large-scale structures in the nearby universe.
  • 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: Virgo Overdensity
Triple: [Milky Way stellar halo, hasSubstructure, Virgo Overdensity]
Generated description
The Virgo Overdensity is a large, diffuse concentration of stars in the Milky Way’s outer regions, thought to be the remnant of a disrupted dwarf galaxy or stellar stream.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Virgo Overdensity
Target entity description: The Virgo Overdensity is a large, diffuse concentration of stars in the Milky Way’s outer regions, thought to be the remnant of a disrupted dwarf galaxy or stellar stream.
  • A. Canis Major Overdensity
    The Canis Major Overdensity is a debated stellar overdensity near the plane of the Milky Way, often interpreted as either the remnant core of a disrupted dwarf galaxy or a warp/flare feature of the Galactic disk.
  • B. CMa Overdensity
    CMa Overdensity is a debated stellar overdensity in the direction of Canis Major, thought by some astronomers to be the remnant of a disrupted dwarf galaxy merging with the Milky Way.
  • C. Virgo Supercluster
    The Virgo Supercluster is a massive galaxy supercluster that contains the Local Group, including the Milky Way, and forms part of the larger Laniakea Supercluster.
  • D. Shapley Supercluster
    The Shapley Supercluster is one of the most massive known concentrations of galaxies in the nearby universe, exerting a significant gravitational influence on surrounding cosmic structures.
  • E. Perseus–Pisces Supercluster
    The Perseus–Pisces Supercluster is a massive, elongated concentration of galaxy clusters stretching hundreds of millions of light-years across space and forming one of the most prominent large-scale structures in the nearby universe.
  • 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_69bd4463dd3c81909966123f20b79d57 completed March 20, 2026, 12:58 p.m.
NER Named-entity recognition batch_69bd7a450f988190a53c258d06938d5e completed March 20, 2026, 4:48 p.m.
NED1 Entity disambiguation (via context triple) batch_69bee0a6698c81908cc1fc7c15ffa5b7 completed March 21, 2026, 6:17 p.m.
NEDg Description generation batch_69bee6cf3fd08190802ddba139a682c6 completed March 21, 2026, 6:43 p.m.
NED2 Entity disambiguation (via description) batch_69beea9b7eec8190b6fb2b402398a33d completed March 21, 2026, 6:59 p.m.
Created at: March 20, 2026, 1:47 p.m.