Triple

T20179232
Position Surface form Disambiguated ID Type / Status
Subject Chicago–Twin Cities route E492680 entity
Predicate servedByNamedTrain P138983 FINISHED
Object 400 (train family)
The 400 was a famous fleet of high-speed passenger trains operated by the Chicago and North Western Railway, known for linking Chicago with major Midwestern cities in roughly 400 minutes.
 E1417218 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: 400 (train family) | Statement: [Chicago–Twin Cities route, servedByNamedTrain, 400 (train family)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 400 (train family)
Context triple: [Chicago–Twin Cities route, servedByNamedTrain, 400 (train family)]
  • A. Odakyu 4000 series
    The Odakyu 4000 series is a Japanese electric multiple unit commuter train type operated by Odakyu Electric Railway, designed for through-services with Tokyo Metro and known for its modern, energy-efficient features.
  • B. NS-74 trains
    NS-74 trains are a series of electric multiple units used on the Santiago Metro system in Chile, known for their long service history and role in the network’s expansion.
  • C. MR-73 trains
    MR-73 trains are a long-serving series of rubber-tired electric multiple units used on the Montreal Metro, known for their distinctive acceleration sound and robust stainless-steel construction.
  • D. Seibu 40000 series
    The Seibu 40000 series is a modern Japanese electric multiple unit train operated by Seibu Railway, designed for commuter services with features such as long-distance comfort seating and improved passenger amenities.
  • E. MX3000 train
    The MX3000 train is a modern electric multiple unit used as the primary passenger rolling stock on the Oslo Metro system in Norway.
  • 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: 400 (train family)
Triple: [Chicago–Twin Cities route, servedByNamedTrain, 400 (train family)]
Generated description
The 400 was a famous fleet of high-speed passenger trains operated by the Chicago and North Western Railway, known for linking Chicago with major Midwestern cities in roughly 400 minutes.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: 400 (train family)
Target entity description: The 400 was a famous fleet of high-speed passenger trains operated by the Chicago and North Western Railway, known for linking Chicago with major Midwestern cities in roughly 400 minutes.
  • A. Odakyu 4000 series
    The Odakyu 4000 series is a Japanese electric multiple unit commuter train type operated by Odakyu Electric Railway, designed for through-services with Tokyo Metro and known for its modern, energy-efficient features.
  • B. NS-74 trains
    NS-74 trains are a series of electric multiple units used on the Santiago Metro system in Chile, known for their long service history and role in the network’s expansion.
  • C. MR-73 trains
    MR-73 trains are a long-serving series of rubber-tired electric multiple units used on the Montreal Metro, known for their distinctive acceleration sound and robust stainless-steel construction.
  • D. Seibu 40000 series
    The Seibu 40000 series is a modern Japanese electric multiple unit train operated by Seibu Railway, designed for commuter services with features such as long-distance comfort seating and improved passenger amenities.
  • E. MX3000 train
    The MX3000 train is a modern electric multiple unit used as the primary passenger rolling stock on the Oslo Metro system in Norway.
  • 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_69da6268a034819081cbd9ea5a1c9475 completed April 11, 2026, 3:02 p.m.
NER Named-entity recognition batch_69e668ed07c8819091bd9ffda237a91c completed April 20, 2026, 5:57 p.m.
NED1 Entity disambiguation (via context triple) batch_6a083c7b9fa08190bbf3c3da21ab21ba completed May 16, 2026, 9:44 a.m.
NEDg Description generation batch_6a084094eccc8190834a1335f3b70411 completed May 16, 2026, 10:01 a.m.
NED2 Entity disambiguation (via description) batch_6a0841a3f8e0819099c13e76d5f4285d completed May 16, 2026, 10:06 a.m.
Created at: April 11, 2026, 11:36 p.m.