Triple
T11735538
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak Siemens Charger locomotives |
E279015
|
entity |
| Predicate | emissionsStandard |
P29485
|
FINISHED |
| Object | EPA Tier 4 |
E202242
|
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: EPA Tier 4 | Statement: [Amtrak Siemens Charger locomotives, emissionsStandard, EPA Tier 4]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: EPA Tier 4 Context triple: [Amtrak Siemens Charger locomotives, emissionsStandard, EPA Tier 4]
-
A.
EPA Tier 4
chosen
EPA Tier 4 is a stringent U.S. Environmental Protection Agency emissions standard for non-road and locomotive diesel engines that sharply limits pollutants such as nitrogen oxides and particulate matter.
-
B.
EPA Tier 5 (proposed or conceptual) emission standards
EPA Tier 5 (proposed or conceptual) emission standards are anticipated future U.S. Environmental Protection Agency regulations that would further tighten allowable pollutant emissions from non-road and other engines beyond the limits set by Tier 4.
-
C.
Euro 6
Euro 6 is a stringent European Union vehicle emissions standard that limits pollutants such as nitrogen oxides and particulate matter from cars and light commercial vehicles.
-
D.
Cummins ISX engines
Cummins ISX engines are a family of heavy-duty diesel engines widely used in commercial trucks and known for their power, durability, and fuel efficiency.
-
E.
MaxxForce
MaxxForce is a line of diesel engines developed and marketed by Navistar International for use in commercial trucks, buses, and other heavy-duty vehicles.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d6aaffec6881908bead509e8621742 |
completed | April 8, 2026, 7:22 p.m. |
| NER | Named-entity recognition | batch_69d8a4edced48190b7a59dd45921828e |
completed | April 10, 2026, 7:21 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f019b318188190bfb7effcf42974d2 |
completed | April 28, 2026, 2:21 a.m. |
Created at: April 8, 2026, 9:41 p.m.