Triple
T9813341
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line C Branch |
E238333
|
entity |
| Predicate | usesRollingStock |
P5426
|
FINISHED |
| Object |
Type 8 LRV
The Type 8 LRV is a low-floor light rail vehicle used by Boston’s MBTA on its Green Line, designed to improve accessibility and passenger comfort.
|
E823269
|
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: Type 8 LRV | Statement: [Green Line C Branch, usesRollingStock, Type 8 LRV]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Type 8 LRV Context triple: [Green Line C Branch, usesRollingStock, Type 8 LRV]
-
A.
Breda LRV2
Breda LRV2 is a type of light rail vehicle built by the Italian manufacturer Breda, used in urban tram and light rail systems such as San Francisco’s Muni Metro.
-
B.
L-Series wagon
The L-Series wagon is a compact station wagon variant of Saturn’s L-Series lineup, offering practical cargo space and family-friendly versatility.
-
C.
W-series medium-duty platform
The W-series medium-duty platform is a line of cab-over-engine commercial truck chassis developed by General Motors for use in various medium-duty vocational and delivery applications.
-
D.
LAV (leisure activity vehicle)
The LAV (leisure activity vehicle) is a compact, van-based multi-purpose vehicle designed to combine passenger comfort with flexible cargo space for everyday and recreational use.
-
E.
C-12V Huron
The C-12V Huron is a military transport and liaison aircraft, derived from the Beechcraft King Air series, used for personnel and light cargo transport, medical evacuation, and utility missions.
- 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: Type 8 LRV Triple: [Green Line C Branch, usesRollingStock, Type 8 LRV]
Generated description
The Type 8 LRV is a low-floor light rail vehicle used by Boston’s MBTA on its Green Line, designed to improve accessibility and passenger comfort.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Type 8 LRV Target entity description: The Type 8 LRV is a low-floor light rail vehicle used by Boston’s MBTA on its Green Line, designed to improve accessibility and passenger comfort.
-
A.
Breda LRV2
Breda LRV2 is a type of light rail vehicle built by the Italian manufacturer Breda, used in urban tram and light rail systems such as San Francisco’s Muni Metro.
-
B.
L-Series wagon
The L-Series wagon is a compact station wagon variant of Saturn’s L-Series lineup, offering practical cargo space and family-friendly versatility.
-
C.
W-series medium-duty platform
The W-series medium-duty platform is a line of cab-over-engine commercial truck chassis developed by General Motors for use in various medium-duty vocational and delivery applications.
-
D.
LAV (leisure activity vehicle)
The LAV (leisure activity vehicle) is a compact, van-based multi-purpose vehicle designed to combine passenger comfort with flexible cargo space for everyday and recreational use.
-
E.
C-12V Huron
The C-12V Huron is a military transport and liaison aircraft, derived from the Beechcraft King Air series, used for personnel and light cargo transport, medical evacuation, and utility missions.
- 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_69ca84defac48190abc1148804f184c1 |
completed | March 30, 2026, 2:12 p.m. |
| NER | Named-entity recognition | batch_69cdb22410208190b82b81a4df800f80 |
completed | April 2, 2026, 12:02 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d1cc63c450819091e57030a48e7d88 |
completed | April 5, 2026, 2:43 a.m. |
| NEDg | Description generation | batch_69d1cce3d9d481909eaf7278dfe20955 |
completed | April 5, 2026, 2:45 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69d1cd5d1670819085c58ff8889318af |
completed | April 5, 2026, 2:47 a.m. |
Created at: March 30, 2026, 8:30 p.m.