Triple
T4832788
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Potomac River crossings toward Washington, D.C. |
E107981
|
entity |
| Predicate | hasComponent |
P35
|
FINISHED |
| Object |
WMATA Blue Line Potomac River crossing
The WMATA Blue Line Potomac River crossing is the segment of Washington’s Metrorail Blue Line that carries trains across the Potomac River into the core of the D.C. metropolitan area.
|
E472868
|
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: WMATA Blue Line Potomac River crossing | Statement: [Potomac River crossings toward Washington, D.C., hasComponent, WMATA Blue Line Potomac River crossing]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: WMATA Blue Line Potomac River crossing Context triple: [Potomac River crossings toward Washington, D.C., hasComponent, WMATA Blue Line Potomac River crossing]
-
A.
Powhite Parkway Bridge
The Powhite Parkway Bridge is a major toll bridge in Richmond, Virginia, carrying the Powhite Parkway across the James River as part of a key commuter route into the city.
-
B.
George Mason Memorial Bridge
The George Mason Memorial Bridge is a major Potomac River crossing in Washington, D.C., carrying traffic as part of the multi-span 14th Street Bridge complex between the city and Virginia.
-
C.
Chesapeake Bay Bridge
The Chesapeake Bay Bridge is a major dual-span suspension bridge in Maryland that carries U.S. Route 50/301 across the Chesapeake Bay, linking Maryland’s eastern and western shores.
-
D.
Rockville Bridge
Rockville Bridge is a historic Pennsylvania railroad bridge renowned as one of the longest stone masonry arch bridges in the world.
-
E.
Arlington Memorial Bridge
Arlington Memorial Bridge is a historic Neoclassical span across the Potomac River in Washington, D.C., symbolically linking the Lincoln Memorial with Arlington National Cemetery.
- 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: WMATA Blue Line Potomac River crossing Triple: [Potomac River crossings toward Washington, D.C., hasComponent, WMATA Blue Line Potomac River crossing]
Generated description
The WMATA Blue Line Potomac River crossing is the segment of Washington’s Metrorail Blue Line that carries trains across the Potomac River into the core of the D.C. metropolitan area.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: WMATA Blue Line Potomac River crossing Target entity description: The WMATA Blue Line Potomac River crossing is the segment of Washington’s Metrorail Blue Line that carries trains across the Potomac River into the core of the D.C. metropolitan area.
-
A.
Powhite Parkway Bridge
The Powhite Parkway Bridge is a major toll bridge in Richmond, Virginia, carrying the Powhite Parkway across the James River as part of a key commuter route into the city.
-
B.
George Mason Memorial Bridge
The George Mason Memorial Bridge is a major Potomac River crossing in Washington, D.C., carrying traffic as part of the multi-span 14th Street Bridge complex between the city and Virginia.
-
C.
Chesapeake Bay Bridge
The Chesapeake Bay Bridge is a major dual-span suspension bridge in Maryland that carries U.S. Route 50/301 across the Chesapeake Bay, linking Maryland’s eastern and western shores.
-
D.
Rockville Bridge
Rockville Bridge is a historic Pennsylvania railroad bridge renowned as one of the longest stone masonry arch bridges in the world.
-
E.
Arlington Memorial Bridge
Arlington Memorial Bridge is a historic Neoclassical span across the Potomac River in Washington, D.C., symbolically linking the Lincoln Memorial with Arlington National Cemetery.
- 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_69bd43fbe444819085cb970706ef73f7 |
completed | March 20, 2026, 12:56 p.m. |
| NER | Named-entity recognition | batch_69bd6cca88d88190a8ad6cf7856bdf69 |
completed | March 20, 2026, 3:50 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69be4dd744688190a420580e3a8332ff |
completed | March 21, 2026, 7:50 a.m. |
| NEDg | Description generation | batch_69be4e764b60819097aace8e7321dc0c |
completed | March 21, 2026, 7:53 a.m. |
| NED2 | Entity disambiguation (via description) | batch_69be4ef7c3e081909c74a573058810f0 |
completed | March 21, 2026, 7:55 a.m. |
Created at: March 20, 2026, 1:24 p.m.