Contoocook Railroad Bridge
E415340
The Contoocook Railroad Bridge is a historic covered railroad bridge in New Hampshire, notable as one of the oldest surviving examples of its kind in the United States.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Contoocook Railroad Bridge canonical | 3 |
| Contoocook Railroad Bridge crosses the Contoocook River | 1 |
| Contoocook Railroad Depot and Covered Bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3424107 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Contoocook Railroad Bridge Context triple: [Contoocook River, hasBridge, Contoocook Railroad Bridge]
-
A.
Kinzie Street Railroad Bridge
The Kinzie Street Railroad Bridge is a historic, early 20th-century vertical-lift railroad bridge in downtown Chicago, notable as one of the city’s iconic industrial-era river crossings.
-
B.
Newkirk Viaduct
The Newkirk Viaduct is a historic 19th-century railroad bridge in Philadelphia that played a key role in early rail travel along the Northeast Corridor.
-
C.
Strawberry Creek bridge
Strawberry Creek bridge is a pedestrian bridge on the UC Berkeley campus that spans Strawberry Creek near Sather Gate, serving as a key walkway between central campus areas.
-
D.
Beachley Viaduct
Beachley Viaduct is a road bridge in Gloucestershire, England, that carries the M48 motorway across the Beachley peninsula as part of the Severn Bridge crossing between England and Wales.
-
E.
Hurricane Gulch Bridge
Hurricane Gulch Bridge is a historic steel arch railroad bridge in Alaska that carries the Alaska Railroad across the deep Hurricane Gulch canyon.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Contoocook Railroad Bridge Target entity description: The Contoocook Railroad Bridge is a historic covered railroad bridge in New Hampshire, notable as one of the oldest surviving examples of its kind in the United States.
-
A.
Kinzie Street Railroad Bridge
The Kinzie Street Railroad Bridge is a historic, early 20th-century vertical-lift railroad bridge in downtown Chicago, notable as one of the city’s iconic industrial-era river crossings.
-
B.
Newkirk Viaduct
The Newkirk Viaduct is a historic 19th-century railroad bridge in Philadelphia that played a key role in early rail travel along the Northeast Corridor.
-
C.
Strawberry Creek bridge
Strawberry Creek bridge is a pedestrian bridge on the UC Berkeley campus that spans Strawberry Creek near Sather Gate, serving as a key walkway between central campus areas.
-
D.
Beachley Viaduct
Beachley Viaduct is a road bridge in Gloucestershire, England, that carries the M48 motorway across the Beachley peninsula as part of the Severn Bridge crossing between England and Wales.
-
E.
Hurricane Gulch Bridge
Hurricane Gulch Bridge is a historic steel arch railroad bridge in Alaska that carries the Alaska Railroad across the deep Hurricane Gulch canyon.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
covered bridge
ⓘ
historic place ⓘ railroad bridge ⓘ |
| architecturalStyle | traditional American covered bridge ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses | Contoocook River ⓘ |
| hasCover | enclosed wooden superstructure ⓘ |
| hasCurrentUse | historic landmark ⓘ |
| hasHistoricUse | carrying trains over the Contoocook River ⓘ |
| hasPreservationStatus | preserved historic bridge ⓘ |
| hasRailwayType | railroad bridge ⓘ |
| hasStructureType | covered bridge ⓘ |
| heritageDesignation |
National Register of Historic Places listing
ⓘ
linked to:
National Register of Historic Places
|
| isAmong | oldest surviving covered railroad bridges in the United States ⓘ |
| locatedIn |
Contoocook, New Hampshire
ⓘ
Merrimack County, New Hampshire ⓘ New Hampshire ⓘ |
| locatedOnWatercourse | Contoocook River ⓘ |
| material | wood ⓘ |
| notableFor | being one of the oldest surviving covered railroad bridges in the United States ⓘ |
| partOf | historic railroad infrastructure in New Hampshire ⓘ |
| region | New England ⓘ |
| significance | historic engineering structure ⓘ |
| state | New Hampshire ⓘ |
| usedFor | railroad traffic ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Contoocook Railroad Bridge Description of subject: The Contoocook Railroad Bridge is a historic covered railroad bridge in New Hampshire, notable as one of the oldest surviving examples of its kind in the United States.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Contoocook Railroad Bridge
linked to: Contoocook Railroad Bridge