Madrid, Iowa
E757235
Madrid, Iowa is a small city in Boone County known for its proximity to the High Trestle Trail and its roots as a historic coal-mining community in central Iowa.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Madrid, Iowa canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8750776 — 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: Madrid, Iowa Context triple: [Central Iowa, hasCity, Madrid, Iowa]
-
A.
Melbourne, Iowa
Melbourne, Iowa is a small rural city located in central Iowa, known for its close-knit community and agricultural surroundings.
-
B.
Mediapolis, Iowa
Mediapolis, Iowa is a small city in southeastern Iowa known for its rural community character and local agricultural surroundings.
-
C.
Washington, Iowa
Washington, Iowa is a small city in southeastern Iowa known for its historic downtown, agricultural surroundings, and role as a local commercial and cultural hub.
-
D.
Urbandale, Iowa
Urbandale, Iowa is a suburban city in the Des Moines metropolitan area known for its residential neighborhoods, parks, and family-friendly community.
-
E.
Cedar Rapids, Iowa
Cedar Rapids, Iowa is the second-largest city in the state, known as a major economic and cultural hub of eastern Iowa with a strong manufacturing base and vibrant arts scene.
- 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: Madrid, Iowa Target entity description: Madrid, Iowa is a small city in Boone County known for its proximity to the High Trestle Trail and its roots as a historic coal-mining community in central Iowa.
-
A.
Melbourne, Iowa
Melbourne, Iowa is a small rural city located in central Iowa, known for its close-knit community and agricultural surroundings.
-
B.
Mediapolis, Iowa
Mediapolis, Iowa is a small city in southeastern Iowa known for its rural community character and local agricultural surroundings.
-
C.
Washington, Iowa
Washington, Iowa is a small city in southeastern Iowa known for its historic downtown, agricultural surroundings, and role as a local commercial and cultural hub.
-
D.
Urbandale, Iowa
Urbandale, Iowa is a suburban city in the Des Moines metropolitan area known for its residential neighborhoods, parks, and family-friendly community.
-
E.
Cedar Rapids, Iowa
Cedar Rapids, Iowa is the second-largest city in the state, known as a major economic and cultural hub of eastern Iowa with a strong manufacturing base and vibrant arts scene.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
city
ⓘ
municipality ⓘ |
| areaCode | 515 ⓘ |
| climate | humid continental climate ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| countrySubdivision | Iowa NERFINISHED ⓘ |
| county | Boone County, Iowa NERFINISHED ⓘ |
| demographicsCharacteristic | small population city ⓘ |
| distanceTo | approximately 25 miles northwest of Des Moines, Iowa ⓘ |
| economicHistory | coal mining-based economy in early 20th century ⓘ |
| FIPSCode | 19-48775 ⓘ |
| GNISFeatureID | 0458822 ⓘ |
| governmentType | mayor–council government ⓘ |
| hasElementarySchool | Madrid Elementary School NERFINISHED ⓘ |
| hasFeature |
historic coal mining sites in surrounding area
ⓘ
trailheads for High Trestle Trail ⓘ |
| hasHighSchool | Madrid High School NERFINISHED ⓘ |
| hasLocalEvent | community festivals related to local heritage ⓘ |
| hasLocalGovernment | City of Madrid government ⓘ |
| hasMiddleSchool | Madrid Junior High School NERFINISHED ⓘ |
| hasNearbyAttraction |
High Trestle Trail
NERFINISHED
ⓘ
High Trestle Trail Bridge NERFINISHED ⓘ |
| hasPark | Edgewood Park NERFINISHED ⓘ |
| hasRecreation |
biking on High Trestle Trail
ⓘ
hiking on High Trestle Trail ⓘ outdoor recreation along Des Moines River ⓘ |
| hasSchoolDistrict | Madrid Community School District NERFINISHED ⓘ |
| historicalIndustry | coal mining ⓘ |
| isPartOfMetropolitanArea | Boone, Iowa micropolitan area NERFINISHED ⓘ |
| knownFor |
historic coal-mining community
ⓘ
proximity to the High Trestle Trail ⓘ |
| locatedIn |
Boone County, Iowa
NERFINISHED
ⓘ
Midwestern United States ⓘ central Iowa ⓘ |
| locatedOn | U.S. Route 17 (historical alignment in area) NERFINISHED ⓘ |
| namedAfter | Madrid, Spain NERFINISHED ⓘ |
| nearRiver | Des Moines River NERFINISHED ⓘ |
| partOf |
Boone County, Iowa
NERFINISHED
ⓘ
Iowa NERFINISHED ⓘ |
| postalCode | 50156 ⓘ |
| region |
Boone County coal mining district (historical)
NERFINISHED
ⓘ
central Iowa ⓘ |
| state | Iowa ⓘ |
| timeZone | Central Time Zone ⓘ |
| timeZoneDST |
Central Time Zone
ⓘ
surface form:
Central Daylight Time
|
| transportation | access via Iowa Highway 17 ⓘ |
| transportHistory | served by railroads supporting coal mining ⓘ |
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: Madrid, Iowa Description of subject: Madrid, Iowa is a small city in Boone County known for its proximity to the High Trestle Trail and its roots as a historic coal-mining community in central Iowa.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Central Iowa