city of Piedras Negras
E726785
The city of Piedras Negras is a Mexican border city in the state of Coahuila, located across the Rio Grande from Eagle Pass, Texas, and known for its industrial activity and cross-border trade.
All labels observed (1)
| Label | Occurrences |
|---|---|
| city of Piedras Negras canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8164475 — 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: city of Piedras Negras Context triple: [Municipal government of Piedras Negras, appliesToTerritorialJurisdiction, city of Piedras Negras]
-
A.
City of Morelia
The City of Morelia is the capital of the Mexican state of Michoacán, renowned for its well-preserved colonial architecture and historic city center designated as a UNESCO World Heritage Site.
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B.
City of Monterrey
The City of Monterrey is a major industrial and economic hub in northeastern Mexico, known for its modern skyline, universities, and role as the capital of the state of Nuevo León.
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C.
City of Puebla
The City of Puebla is a major historic and industrial city in central Mexico, renowned for its colonial architecture, culinary traditions like mole poblano, and its role in the Battle of Puebla.
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D.
Celaya
Celaya is a major city and industrial municipality in the Mexican state of Guanajuato, known for its manufacturing sector and traditional cajeta (goat’s milk caramel).
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E.
Monclova
Monclova is an industrial city in northern Mexico known as a major steel-producing center in the state of Coahuila.
- 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: city of Piedras Negras Target entity description: The city of Piedras Negras is a Mexican border city in the state of Coahuila, located across the Rio Grande from Eagle Pass, Texas, and known for its industrial activity and cross-border trade.
-
A.
City of Morelia
The City of Morelia is the capital of the Mexican state of Michoacán, renowned for its well-preserved colonial architecture and historic city center designated as a UNESCO World Heritage Site.
-
B.
City of Monterrey
The City of Monterrey is a major industrial and economic hub in northeastern Mexico, known for its modern skyline, universities, and role as the capital of the state of Nuevo León.
-
C.
City of Puebla
The City of Puebla is a major historic and industrial city in central Mexico, renowned for its colonial architecture, culinary traditions like mole poblano, and its role in the Battle of Puebla.
-
D.
Celaya
Celaya is a major city and industrial municipality in the Mexican state of Guanajuato, known for its manufacturing sector and traditional cajeta (goat’s milk caramel).
-
E.
Monclova
Monclova is an industrial city in northern Mexico known as a major steel-producing center in the state of Coahuila.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
city
ⓘ
municipality seat ⓘ |
| borderRole | gateway for trade between Coahuila and Texas ⓘ |
| climate | semi-arid climate ⓘ |
| country | Mexico ⓘ |
| currency | Mexican peso ⓘ |
| demographicsCharacteristic | binational labor market with Eagle Pass ⓘ |
| hasBorderCrossingWith |
Eagle Pass Port of Entry
NERFINISHED
ⓘ
United States NERFINISHED ⓘ |
| hasBorderInfrastructure |
customs facilities
ⓘ
international bridges ⓘ |
| hasEconomicActivity |
cross-border trade
ⓘ
logistics and transportation ⓘ manufacturing industry ⓘ maquiladora industry ⓘ retail and services ⓘ |
| hasEducationalInstitutionType |
private schools
ⓘ
public schools ⓘ |
| hasFunction |
border trade hub
ⓘ
industrial center ⓘ regional commercial center ⓘ |
| hasHealthcareInfrastructure |
private clinics
ⓘ
public hospitals ⓘ |
| hasHigherEducationInstitutionType |
technical institutes
ⓘ
universities ⓘ |
| hasIndustrialInfrastructure |
industrial parks
ⓘ
maquiladora plants ⓘ |
| hasLawEnforcement |
municipal police
ⓘ
state police ⓘ |
| hasLocalGovernmentType | municipal government ⓘ |
| hasPublicTransport | urban bus routes ⓘ |
| isServedBy |
local airport
ⓘ
regional bus terminals ⓘ |
| languageUsed | Spanish ⓘ |
| locatedInAdministrativeTerritorialEntity |
Coahuila
NERFINISHED
ⓘ
Piedras Negras Municipality NERFINISHED ⓘ |
| locatedInFederalElectoralDistrict | Coahuila federal electoral districts NERFINISHED ⓘ |
| locatedInOrNextToBodyOfWater | Rio Grande NERFINISHED ⓘ |
| locatedInRegion |
Northern Mexico
NERFINISHED
ⓘ
border region of Coahuila ⓘ |
| locatedInTimeZone |
Central Time Zone
ⓘ
surface form:
Central Daylight Time
Central Time Zone ⓘ
surface form:
Central Standard Time
|
| locatedOn | Rio Grande NERFINISHED ⓘ |
| oppositeOfAcrossRiverFrom | Eagle Pass, Texas NERFINISHED ⓘ |
| partOf | Mexico–United States border NERFINISHED ⓘ |
| roadNetworkConnection |
Mexican Federal Highway 2
NERFINISHED
ⓘ
Mexican Federal Highway 57 NERFINISHED ⓘ |
| sharesBorderWith | Eagle Pass, Texas NERFINISHED ⓘ |
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: city of Piedras Negras Description of subject: The city of Piedras Negras is a Mexican border city in the state of Coahuila, located across the Rio Grande from Eagle Pass, Texas, and known for its industrial activity and cross-border trade.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
Municipal government of Piedras Negras
→
appliesToTerritorialJurisdiction
→
city of Piedras Negras
ⓘ