Triple
T5994904
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Chepstow Racecourse |
E133442
|
entity |
| Predicate | ownership |
P347
|
FINISHED |
| Object |
Arena Racing Company
Arena Racing Company is a major British racecourse operator and racing media business that owns and manages numerous horse racing venues across the UK.
|
E560417
|
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: Arena Racing Company | Statement: [Chepstow Racecourse, ownership, Arena Racing Company]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Arena Racing Company Context triple: [Chepstow Racecourse, ownership, Arena Racing Company]
-
A.
The Meadows Racetrack and Casino
The Meadows Racetrack and Casino is a popular Pennsylvania entertainment complex featuring live horse racing, a casino gaming floor, and various dining and event options.
-
B.
The World Center of Racing
The World Center of Racing is a renowned nickname for Daytona International Speedway, the iconic Florida motorsports complex famous for hosting the Daytona 500 and other major NASCAR events.
-
C.
Ruidoso Downs Race Track
Ruidoso Downs Race Track is a prominent horse racing venue in New Mexico best known for hosting major Quarter Horse and Thoroughbred races, including the prestigious All American Futurity.
-
D.
Rush Street Gaming
Rush Street Gaming is a U.S.-based casino and gaming company that develops and operates regional casinos and online betting platforms.
-
E.
Churchill Downs Incorporated
Churchill Downs Incorporated is an American gaming and racing company best known as the owner and operator of the Churchill Downs racetrack, home of the Kentucky Derby.
- 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: Arena Racing Company Triple: [Chepstow Racecourse, ownership, Arena Racing Company]
Generated description
Arena Racing Company is a major British racecourse operator and racing media business that owns and manages numerous horse racing venues across the UK.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Arena Racing Company Target entity description: Arena Racing Company is a major British racecourse operator and racing media business that owns and manages numerous horse racing venues across the UK.
-
A.
The Meadows Racetrack and Casino
The Meadows Racetrack and Casino is a popular Pennsylvania entertainment complex featuring live horse racing, a casino gaming floor, and various dining and event options.
-
B.
The World Center of Racing
The World Center of Racing is a renowned nickname for Daytona International Speedway, the iconic Florida motorsports complex famous for hosting the Daytona 500 and other major NASCAR events.
-
C.
Ruidoso Downs Race Track
Ruidoso Downs Race Track is a prominent horse racing venue in New Mexico best known for hosting major Quarter Horse and Thoroughbred races, including the prestigious All American Futurity.
-
D.
Rush Street Gaming
Rush Street Gaming is a U.S.-based casino and gaming company that develops and operates regional casinos and online betting platforms.
-
E.
Churchill Downs Incorporated
Churchill Downs Incorporated is an American gaming and racing company best known as the owner and operator of the Churchill Downs racetrack, home of the Kentucky Derby.
- 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_69c00870ddbc81909880fa3864f4f38d |
completed | March 22, 2026, 3:19 p.m. |
| NER | Named-entity recognition | batch_69c04e943dcc8190a09817e8ef0e4188 |
completed | March 22, 2026, 8:18 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c1086f6b5481908c573c6e533ad98a |
completed | March 23, 2026, 9:31 a.m. |
| NEDg | Description generation | batch_69c10920720c8190bc182385d14d45ae |
completed | March 23, 2026, 9:34 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69c109ab219c8190b6155c32ae5db1b9 |
completed | March 23, 2026, 9:36 a.m. |
Created at: March 22, 2026, 4:05 p.m.