Triple

T27501245

Position	Surface form	Disambiguated ID	Type / Status
Subject	Keisei Electric Railway	`E694154`	entity
Predicate	ownsLine	`P69641`	FINISHED
Object	Keisei Chiba Line The Keisei Chiba Line is a commuter railway line in Chiba Prefecture, Japan, operated by Keisei Electric Railway and serving as a key route connecting local communities with central Chiba and the broader Keisei network.	`E2294456`	NE FINISHED

How this triple was built (2 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: Keisei Chiba Line | Statement: [Keisei Electric Railway, ownsLine, Keisei Chiba Line]

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: Keisei Chiba Line
Triple: [Keisei Electric Railway, ownsLine, Keisei Chiba Line]

Generated description

The Keisei Chiba Line is a commuter railway line in Chiba Prefecture, Japan, operated by Keisei Electric Railway and serving as a key route connecting local communities with central Chiba and the broader Keisei network.

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_69ef538370888190b1ddf53bb4831188`	completed	April 27, 2026, 12:16 p.m.
NER	Named-entity recognition	`batch_69f62ec2f09c819087fd73f936115cea`	completed	May 2, 2026, 5:05 p.m.
NED1	Entity disambiguation (via context triple)	`batch_6a7bec0f58a88190927b5fae86ca7725`	completed	Aug. 12, 2026, 3:44 a.m.
NEDg	Description generation	`batch_6a7beca0fa648190afffcd1eadf05a5d`	completed	Aug. 12, 2026, 3:46 a.m.
NED2	Entity disambiguation (via description)	`batch_6a7becef46888190ab980096ad35877c`	completed	Aug. 12, 2026, 3:47 a.m.

Created at: April 27, 2026, 1:11 p.m.