Mid-Atlantic Ridge
E692
The Mid-Atlantic Ridge is a vast underwater mountain range and divergent tectonic plate boundary running down the center of the Atlantic Ocean, where new oceanic crust is formed.
All labels observed (15)
How this entity was disambiguated
This entity first appeared as the object of triple T17576 — 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: Mid-Atlantic Ridge Context triple: [Atlantic Ocean, containsFeature, Mid-Atlantic Ridge]
-
A.
Cape Cod
Cape Cod is a hook-shaped peninsula in southeastern Massachusetts known for its sandy beaches, maritime villages, and popular summer tourism.
-
B.
East River
The East River is a tidal strait in New York City that separates Manhattan from Brooklyn and Queens and serves as a major waterway spanned by several iconic bridges.
-
C.
Atlantic Ocean
The Atlantic Ocean is the world's second-largest ocean, separating the Americas from Europe and Africa and serving as a major route for global climate regulation, trade, and exploration.
-
D.
Hudson River
The Hudson River is a major waterway in eastern New York State that flows south past cities like Albany and New York City before emptying into the Atlantic Ocean at New York Harbor.
-
E.
Coastal Ranges
The Coastal Ranges are a series of mountain ranges running along California’s Pacific coast, known for their rugged terrain, diverse ecosystems, and influence on the state’s climate and agriculture.
- 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: Mid-Atlantic Ridge Target entity description: The Mid-Atlantic Ridge is a vast underwater mountain range and divergent tectonic plate boundary running down the center of the Atlantic Ocean, where new oceanic crust is formed.
-
A.
Cape Cod
Cape Cod is a hook-shaped peninsula in southeastern Massachusetts known for its sandy beaches, maritime villages, and popular summer tourism.
-
B.
East River
The East River is a tidal strait in New York City that separates Manhattan from Brooklyn and Queens and serves as a major waterway spanned by several iconic bridges.
-
C.
Atlantic Ocean
The Atlantic Ocean is the world's second-largest ocean, separating the Americas from Europe and Africa and serving as a major route for global climate regulation, trade, and exploration.
-
D.
Hudson River
The Hudson River is a major waterway in eastern New York State that flows south past cities like Albany and New York City before emptying into the Atlantic Ocean at New York Harbor.
-
E.
Coastal Ranges
The Coastal Ranges are a series of mountain ranges running along California’s Pacific coast, known for their rugged terrain, diverse ecosystems, and influence on the state’s climate and agriculture.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
divergent plate boundary
ⓘ
mid-ocean ridge ⓘ underwater mountain range ⓘ |
| associatedWith |
Iceland
ⓘ
mid-ocean ridge basalt ⓘ |
| averageSpreadingRate | about 2.5 cm per year ⓘ |
| biologicalSignificance | supports chemosynthetic ecosystems ⓘ |
| crustTypeFormed | basaltic oceanic crust ⓘ |
| discoveredBy | Marie Tharp ⓘ |
| discoveryPeriod | mid-20th century detailed mapping ⓘ |
| earthquakeActivity | frequent shallow earthquakes ⓘ |
| evidenceFor |
continental drift
ⓘ
plate tectonics ⓘ |
| extendsFrom | Arctic Ocean ⓘ |
| extendsTo | Southern Ocean ⓘ |
| geologicalProcess | seafloor spreading ⓘ |
| governedBy | Mid-Atlantic Ridge ecosystem management bodies ⓘ |
| hasFeature |
black smokers
ⓘ
fracture zones ⓘ hydrothermal vents ⓘ rift valley ⓘ transform faults ⓘ |
| highestPoint | Icelandic segment ⓘ |
| length | over 16,000 km ⓘ |
| locatedIn | Atlantic Ocean ⓘ |
| magneticAnomaliesShow | symmetrical magnetic striping ⓘ |
| mappedBy | Bruce C. Heezen ⓘ |
| meets |
Gakkel Ridge
ⓘ
Scotia Ridge ⓘ Southwest Indian Ridge ⓘ |
| nearbyFeature |
Ascension Island
ⓘ
Azores ⓘ Tristan da Cunha ⓘ |
| orientation | roughly north–south ⓘ |
| partOf | global mid-ocean ridge system ⓘ |
| passesThrough | Iceland ⓘ |
| produces | new oceanic crust ⓘ |
| segmentIncludes |
Bouvet Triple Junction region
ⓘ
Charlie-Gibbs Fracture Zone ⓘ Mid-Atlantic Ridge self-linksurface differs ⓘ
surface form:
Reykjanes Ridge
Romanche Fracture Zone ⓘ |
| separates |
African Plate
ⓘ
Eurasian Plate ⓘ North American Plate ⓘ South American Plate ⓘ |
| spreadingRateType | slow-spreading ridge ⓘ |
| tectonicSetting | divergent boundary ⓘ |
| volcanismType | submarine volcanism ⓘ |
| waterDepth | typically 2,000–3,000 meters below sea level ⓘ |
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: Mid-Atlantic Ridge Description of subject: The Mid-Atlantic Ridge is a vast underwater mountain range and divergent tectonic plate boundary running down the center of the Atlantic Ocean, where new oceanic crust is formed.
Referenced by (74)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Reykjanes Ridge
this entity surface form:
Mid-Atlantic Ridge system
this entity surface form:
Iceland hotspot via Mid-Atlantic Ridge
subject surface form:
Charlie-Gibbs Fracture Zone
this entity surface form:
Mid-Atlantic Ridge–Gloria Fault transition zone
this entity surface form:
Mid-Atlantic Ridge volcanic system
this entity surface form:
North Atlantic tectonic boundary
this entity surface form:
Atlantic rift system
subject surface form:
Ewing Fracture Zone
this entity surface form:
Mid-Atlantic Ridge system
subject surface form:
Ewing Fracture Zone
this entity surface form:
Mid-Atlantic Ridge region
this entity surface form:
Mid-Atlantic Ridge in Iceland