Triple
T22216804
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | UP-NW |
E549093
|
entity |
| Predicate | partOf |
P40
|
FINISHED |
| Object |
Union Pacific District of Metra
The Union Pacific District of Metra is a group of commuter rail lines in the Chicago metropolitan area operated by Metra in partnership with Union Pacific Railroad.
|
E1526359
|
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: Union Pacific District of Metra | Statement: [UP-NW, partOf, Union Pacific District of Metra]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Union Pacific District of Metra Context triple: [UP-NW, partOf, Union Pacific District of Metra]
-
A.
Union Pacific Geneva Subdivision
The Union Pacific Geneva Subdivision is a major freight rail line in the Chicago area used by Union Pacific Railroad for both mainline operations and commuter rail services.
-
B.
Union Pacific Los Angeles Subdivision
The Union Pacific Los Angeles Subdivision is a major freight rail line in Southern California that forms a key segment of Union Pacific’s north–south mainline between Los Angeles and the Pacific Northwest.
-
C.
Union Pacific Railroad
Union Pacific Railroad is one of the largest freight rail networks in the United States, operating an extensive system that spans the western two-thirds of the country.
-
D.
Union Pacific Railroad Coast Subdivision
The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.
-
E.
Union Pacific North Line
The Union Pacific North Line is a Metra commuter rail line in the Chicago metropolitan area that runs north from downtown Chicago through suburbs along Lake Michigan into Kenosha, Wisconsin.
- 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: Union Pacific District of Metra Triple: [UP-NW, partOf, Union Pacific District of Metra]
Generated description
The Union Pacific District of Metra is a group of commuter rail lines in the Chicago metropolitan area operated by Metra in partnership with Union Pacific Railroad.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Union Pacific District of Metra Target entity description: The Union Pacific District of Metra is a group of commuter rail lines in the Chicago metropolitan area operated by Metra in partnership with Union Pacific Railroad.
-
A.
Union Pacific Geneva Subdivision
The Union Pacific Geneva Subdivision is a major freight rail line in the Chicago area used by Union Pacific Railroad for both mainline operations and commuter rail services.
-
B.
Union Pacific Los Angeles Subdivision
The Union Pacific Los Angeles Subdivision is a major freight rail line in Southern California that forms a key segment of Union Pacific’s north–south mainline between Los Angeles and the Pacific Northwest.
-
C.
Union Pacific Railroad
Union Pacific Railroad is one of the largest freight rail networks in the United States, operating an extensive system that spans the western two-thirds of the country.
-
D.
Union Pacific Railroad Coast Subdivision
The Union Pacific Railroad Coast Subdivision is a key rail corridor in California that carries both freight and commuter services, including trains operated by the Altamont Corridor Express.
-
E.
Union Pacific North Line
The Union Pacific North Line is a Metra commuter rail line in the Chicago metropolitan area that runs north from downtown Chicago through suburbs along Lake Michigan into Kenosha, Wisconsin.
- 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_69e11e3f7e04819089806d81d5ac431e |
completed | April 16, 2026, 5:37 p.m. |
| NER | Named-entity recognition | batch_69f12b8c9d488190a59f571862997304 |
completed | April 28, 2026, 9:50 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0aae692a108190ad7156d9b3c72901 |
completed | May 18, 2026, 6:15 a.m. |
| NEDg | Description generation | batch_6a0ab28bc764819083ba5f419d288eab |
completed | May 18, 2026, 6:32 a.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0ab32113748190bfd86bcffcf06b76 |
completed | May 18, 2026, 6:35 a.m. |
Created at: April 16, 2026, 8:37 p.m.