Triple
T1832914
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Southeast Washington, D.C. |
E40998
|
entity |
| Predicate | contains |
P35
|
FINISHED |
| Object |
Frederick Douglass Memorial Bridge (southern landing)
The Frederick Douglass Memorial Bridge (southern landing) is the portion of the major Anacostia River crossing where the bridge connects into Southeast Washington, D.C., linking the span to nearby neighborhoods and roadways.
|
E217212
|
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: Frederick Douglass Memorial Bridge (southern landing) | Statement: [Southeast Washington, D.C., contains, Frederick Douglass Memorial Bridge (southern landing)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Frederick Douglass Memorial Bridge (southern landing) Context triple: [Southeast Washington, D.C., contains, Frederick Douglass Memorial Bridge (southern landing)]
-
A.
Memorial Bridge
Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
-
B.
Longfellow Bridge
Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
-
C.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
-
D.
14th Street Bridge
The 14th Street Bridge is a major bridge complex over the Potomac River in the Washington, D.C. area that carries multiple highway and rail routes between Virginia and the nation’s capital.
-
E.
Grenville Dodge Memorial Bridge
The Grenville Dodge Memorial Bridge is a major highway bridge in the Omaha–Council Bluffs area that carries Interstate 480 across the Missouri River between Nebraska and Iowa.
- 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: Frederick Douglass Memorial Bridge (southern landing) Triple: [Southeast Washington, D.C., contains, Frederick Douglass Memorial Bridge (southern landing)]
Generated description
The Frederick Douglass Memorial Bridge (southern landing) is the portion of the major Anacostia River crossing where the bridge connects into Southeast Washington, D.C., linking the span to nearby neighborhoods and roadways.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Frederick Douglass Memorial Bridge (southern landing) Target entity description: The Frederick Douglass Memorial Bridge (southern landing) is the portion of the major Anacostia River crossing where the bridge connects into Southeast Washington, D.C., linking the span to nearby neighborhoods and roadways.
-
A.
Memorial Bridge
Memorial Bridge is a prominent ceremonial bridge spanning the Potomac River, symbolically linking Arlington National Cemetery with the Lincoln Memorial in Washington, D.C.
-
B.
Longfellow Bridge
Longfellow Bridge is a historic steel and granite bridge in Boston, Massachusetts, known for carrying road and rail traffic between Boston and Cambridge across the Charles River.
-
C.
Mark Twain Memorial Bridge
The Mark Twain Memorial Bridge is a highway bridge over the Mississippi River near Hannibal, Missouri, named in honor of the famed American author Mark Twain.
-
D.
14th Street Bridge
The 14th Street Bridge is a major bridge complex over the Potomac River in the Washington, D.C. area that carries multiple highway and rail routes between Virginia and the nation’s capital.
-
E.
Walt Whitman Bridge
The Walt Whitman Bridge is a major suspension bridge connecting Philadelphia, Pennsylvania, to Gloucester City, New Jersey, and serving as a key highway crossing over the Delaware River.
- 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_69a88647f9388190909bc36e795bdaec |
completed | March 4, 2026, 7:21 p.m. |
| NER | Named-entity recognition | batch_69abb024287c8190b68aa070e556a381 |
completed | March 7, 2026, 4:57 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69adf3c39a448190923588d9c07313e1 |
completed | March 8, 2026, 10:10 p.m. |
| NEDg | Description generation | batch_69adf598ee5c819081549042859e076f |
completed | March 8, 2026, 10:18 p.m. |
| NED2 | Entity disambiguation (via description) | batch_69adf6a6cc18819092a4e6535ce1376c |
completed | March 8, 2026, 10:22 p.m. |
Created at: March 4, 2026, 7:33 p.m.