Triple

T32154085

Position	Surface form	Disambiguated ID	Type / Status
Subject	Preppy Killer	`E821232`	entity
Predicate	hasPerpetratorFullName	`P169769`	FINISHED
Object	Robert Emmet Chambers Jr. Robert Emmet Chambers Jr. is an American man infamously known for the 1986 killing of Jennifer Levin in New York City, a case widely dubbed the "Preppy Killer" murder.	`E1993398`	NE FINISHED

How this triple was built (3 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: Robert Emmet Chambers Jr. | Statement: [Preppy Killer, hasPerpetratorFullName, Robert Emmet Chambers Jr.]

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: Robert Emmet Chambers Jr.
Triple: [Preppy Killer, hasPerpetratorFullName, Robert Emmet Chambers Jr.]

Generated description

Robert Emmet Chambers Jr. is an American man infamously known for the 1986 killing of Jennifer Levin in New York City, a case widely dubbed the "Preppy Killer" murder.

PD Predicate disambiguation gpt-5-mini-2025-08-07

Target predicate: hasPerpetratorFullName
Context triple: [Preppy Killer, hasPerpetratorFullName, Robert Emmet Chambers Jr.]

A. perpetratorFullName chosen
Indicates the complete personal name of the individual who committed or is responsible for the act or offense.
B. hasPerpetrators
Indicates that certain entities are responsible for carrying out, committing, or executing a particular act, event, or wrongdoing.
C. perpetratorAlias
Indicates that an entity is known or referred to by an alternative name or alias specifically in the context of being the perpetrator of an act or offense.
D. perpetratorInCase
Indicates that an entity is the person or group responsible for committing the offense or wrongdoing in a particular legal or investigative case.
E. actualPerpetratorStatus
Indicates whether an entity is identified or classified as the actual perpetrator of an act or offense.
F. None of above.

Provenance (6 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_69f34905e098819082191a6922a6d607`	completed	April 30, 2026, 12:20 p.m.
NER	Named-entity recognition	`batch_69fd509e6bc08190b263923c2f40fea3`	completed	May 8, 2026, 2:55 a.m.
NED1	Entity disambiguation (via context triple)	`batch_6a2f0148acfc8190ba456753cac7bd28`	completed	June 14, 2026, 7:30 p.m.
NEDg	Description generation	`batch_6a2f023663f48190b11e32ae5a412840`	completed	June 14, 2026, 7:34 p.m.
NED2	Entity disambiguation (via description)	`batch_6a2f03669a7c8190b928b260ef9f6454`	completed	June 14, 2026, 7:39 p.m.
PD	Predicate disambiguation	`batch_69fd4fd1a58881909d4b84de1b24e380`	completed	May 8, 2026, 2:52 a.m.

Created at: May 1, 2026, 12:32 a.m.