Triple
T11504449
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Blue Island–Vermont Street |
E272745
|
entity |
| Predicate | fareSystem |
P395
|
FINISHED |
| Object |
Metra fare zones
Metra fare zones are a distance-based pricing system used by the Chicago-area Metra commuter rail network to determine ticket costs between stations.
|
E929765
|
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: Metra fare zones | Statement: [Blue Island–Vermont Street, fareSystem, Metra fare zones]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Metra fare zones Context triple: [Blue Island–Vermont Street, fareSystem, Metra fare zones]
-
A.
Metrolink fare zones
Metrolink fare zones are the concentric pricing areas used to calculate ticket costs across Greater Manchester’s Metrolink tram network.
-
B.
Metra fare zone H
Metra fare zone H is one of the outer commuter rail fare zones in the Chicago-area Metra system, used to determine ticket prices for longer-distance trips from downtown.
-
C.
Metra zone E
Metra zone E is a commuter rail fare zone in the Chicago metropolitan area used to determine ticket prices on Metra’s zone-based system.
-
D.
Metra zone D
Metra zone D is a fare zone within the Metra commuter rail system in the Chicago metropolitan area, used to determine ticket prices for stations located at a similar distance from downtown Chicago.
-
E.
SPT fare zones
SPT fare zones are the geographic pricing areas used to determine ticket costs and validity across the Strathclyde Partnership for Transport network in west-central Scotland.
- 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: Metra fare zones Triple: [Blue Island–Vermont Street, fareSystem, Metra fare zones]
Generated description
Metra fare zones are a distance-based pricing system used by the Chicago-area Metra commuter rail network to determine ticket costs between stations.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Metra fare zones Target entity description: Metra fare zones are a distance-based pricing system used by the Chicago-area Metra commuter rail network to determine ticket costs between stations.
-
A.
Metrolink fare zones
Metrolink fare zones are the concentric pricing areas used to calculate ticket costs across Greater Manchester’s Metrolink tram network.
-
B.
Metra fare zone H
Metra fare zone H is one of the outer commuter rail fare zones in the Chicago-area Metra system, used to determine ticket prices for longer-distance trips from downtown.
-
C.
Metra zone E
Metra zone E is a commuter rail fare zone in the Chicago metropolitan area used to determine ticket prices on Metra’s zone-based system.
-
D.
Metra zone D
Metra zone D is a fare zone within the Metra commuter rail system in the Chicago metropolitan area, used to determine ticket prices for stations located at a similar distance from downtown Chicago.
-
E.
SPT fare zones
SPT fare zones are the geographic pricing areas used to determine ticket costs and validity across the Strathclyde Partnership for Transport network in west-central Scotland.
- 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_69d6aae2c3748190bed2ea50dfb160dc |
completed | April 8, 2026, 7:22 p.m. |
| NER | Named-entity recognition | batch_69d86db2f4b08190801de1b773932f59 |
completed | April 10, 2026, 3:25 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69e624d666c081908253cea4e2da1a4a |
completed | April 20, 2026, 1:06 p.m. |
| NEDg | Description generation | batch_69e62cf224f881908badcdab6aea1aef |
completed | April 20, 2026, 1:41 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69e663ffedfc8190a2b51995c62d1e6b |
completed | April 20, 2026, 5:36 p.m. |
Created at: April 8, 2026, 9:36 p.m.