Triple
T214574
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Positive Train Control |
E4790
|
entity |
| Predicate | isMandatedBy |
P1313
|
FINISHED |
| Object | Rail Safety Improvement Act of 2008 |
E12215
|
NE FINISHED |
How this triple was built (3 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: Rail Safety Improvement Act of 2008 | Statement: [Positive Train Control, isMandatedBy, Rail Safety Improvement Act of 2008]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Rail Safety Improvement Act of 2008 Context triple: [Positive Train Control, isMandatedBy, Rail Safety Improvement Act of 2008]
-
A.
Rail Safety Improvement Act of 2008
chosen
The Rail Safety Improvement Act of 2008 is a U.S. federal law that significantly overhauled rail safety regulations, including mandating positive train control systems and strengthening oversight to reduce accidents and improve railroad safety.
-
B.
Passenger Rail Investment and Improvement Act of 2008
The Passenger Rail Investment and Improvement Act of 2008 is a U.S. federal law that reauthorized and reformed Amtrak while establishing new funding, performance, and planning frameworks to improve intercity passenger rail service nationwide.
-
C.
Federal Railroad Safety Act
The Federal Railroad Safety Act is a U.S. law that establishes nationwide standards and regulatory authority to promote and enforce the safety of railroad operations.
-
D.
Department of Transportation Act
The Department of Transportation Act is the U.S. federal law enacted in 1966 that created the United States Department of Transportation to coordinate and oversee national transportation policies and programs.
-
E.
Housing and Economic Recovery Act of 2008
The Housing and Economic Recovery Act of 2008 is a major U.S. federal law enacted in response to the subprime mortgage crisis to stabilize the housing market, reform mortgage finance regulation, and support distressed homeowners and communities.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: isMandatedBy Context triple: [Positive Train Control, isMandatedBy, Rail Safety Improvement Act of 2008]
-
A.
canMandate
Indicates that one entity has the authority or power to require another entity to perform or comply with something.
-
B.
mandateFrom
Indicates that one entity has been granted authoritative permission or instruction by another entity to act or decide on its behalf.
-
C.
isSubjectTo
chosen
Indicates that one entity is governed, affected, or constrained by the authority, rules, conditions, or influence of another entity.
-
D.
determinedBy
Indicates that one entity’s state, value, or outcome is decided, controlled, or fully specified by another entity.
-
E.
forcedBy
Indicates that an entity is compelled or coerced into an action or state by another entity.
- F. None of above.
Provenance (4 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_69a2575cb1dc8190a01ad332426dc339 |
completed | Feb. 28, 2026, 2:47 a.m. |
| NER | Named-entity recognition | batch_69a25c32ae208190a03d504ef43ea659 |
completed | Feb. 28, 2026, 3:08 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a33e3f66888190a05ddcb0af4d3c5f |
completed | Feb. 28, 2026, 7:13 p.m. |
| PD | Predicate disambiguation | batch_69a25b509400819093a6c1a1bac861e3 |
completed | Feb. 28, 2026, 3:04 a.m. |
Created at: Feb. 28, 2026, 2:52 a.m.