Mare Cognitum region, Oceanus Procellarum
E256002
The Mare Cognitum region in Oceanus Procellarum is a basaltic lunar mare on the Moon’s near side, notable as the site of NASA’s Apollo 12 crewed landing.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Oceanus Procellarum | 3 |
| Mare Cognitum region | 1 |
| Mare Cognitum region, Oceanus Procellarum canonical | 1 |
| Oceanus Procellarum region | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2330337 — 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: Mare Cognitum region, Oceanus Procellarum Context triple: [Apollo 12, landingSite, Mare Cognitum region, Oceanus Procellarum]
-
A.
Mare Imbrium
Mare Imbrium is a vast, dark lunar mare formed by ancient volcanic activity, prominent on the Moon’s near side and notable as the landing site of several Apollo missions.
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B.
Mare Tranquillitatis
Mare Tranquillitatis is a lunar mare on the Moon’s near side, best known as the site of Apollo 11’s first crewed Moon landing.
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C.
Mare Internum
Mare Internum is the ancient Roman name for the Mediterranean Sea, the central body of water around which much of classical civilization developed.
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D.
Mare Imbrium vicinity
Mare Imbrium vicinity refers to the area surrounding the Moon’s large Mare Imbrium basin, a prominent dark lava plain in the lunar northwest near which the Soviet Luna 2 spacecraft impacted.
-
E.
Descartes Highlands
Descartes Highlands is a rugged, heavily cratered lunar highland region notable as the exploration site of NASA’s Apollo 16 mission.
- 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: Mare Cognitum region, Oceanus Procellarum Target entity description: The Mare Cognitum region in Oceanus Procellarum is a basaltic lunar mare on the Moon’s near side, notable as the site of NASA’s Apollo 12 crewed landing.
-
A.
Mare Imbrium
Mare Imbrium is a vast, dark lunar mare formed by ancient volcanic activity, prominent on the Moon’s near side and notable as the landing site of several Apollo missions.
-
B.
Mare Tranquillitatis
Mare Tranquillitatis is a lunar mare on the Moon’s near side, best known as the site of Apollo 11’s first crewed Moon landing.
-
C.
Mare Internum
Mare Internum is the ancient Roman name for the Mediterranean Sea, the central body of water around which much of classical civilization developed.
-
D.
Mare Imbrium vicinity
Mare Imbrium vicinity refers to the area surrounding the Moon’s large Mare Imbrium basin, a prominent dark lava plain in the lunar northwest near which the Soviet Luna 2 spacecraft impacted.
-
E.
Descartes Highlands
Descartes Highlands is a rugged, heavily cratered lunar highland region notable as the exploration site of NASA’s Apollo 16 mission.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
basaltic plain
ⓘ
lunar mare ⓘ |
| adjacentTo |
Mare Insularum
ⓘ
Mare Nubium ⓘ Oceanus Procellarum ⓘ |
| albedo | low ⓘ |
| astronomicalBodyType | lunar mare ⓘ |
| belongsTo | lunar near side western hemisphere ⓘ |
| category |
Lunar geological features
ⓘ
Maria of the Moon ⓘ |
| celestialBody | Moon ⓘ |
| coordinateSystem | selenographic coordinates ⓘ |
| discoveredBy | early telescopic astronomers ⓘ |
| exploredBy |
Apollo 12
ⓘ
surface form:
Apollo 12 mission
uncrewed Surveyor missions vicinity ⓘ |
| formedBy | volcanic flooding of impact basin ⓘ |
| geologicalContext | lunar mare basalt flows ⓘ |
| gravityFieldStudiedBy |
GRAIL
ⓘ
surface form:
GRAIL mission
|
| hasFeature | smooth dark basaltic surface ⓘ |
| languageOfName | Latin ⓘ |
| locatedIn | Oceanus Procellarum ⓘ |
| locatedOn | Moon ⓘ |
| locatedOnSide | near side of the Moon ⓘ |
| mappedBy |
Clementine mission
ⓘ
Lunar Orbiter missions ⓘ Lunar Reconnaissance Orbiter ⓘ |
| nameMeaning |
Sea of Knowledge
ⓘ
Sea that has become known ⓘ |
| near |
Apollo 12 landing site
ⓘ
Fra Mauro formation ⓘ Surveyor 3 landing site ⓘ |
| notableFor | Apollo 12 landing site vicinity ⓘ |
| observationWavelength |
near-infrared
ⓘ
radar ⓘ visible light ⓘ |
| observedFrom | Earth ⓘ |
| partOf | lunar nearside maria ⓘ |
| planetaryBody | Moon ⓘ |
| regionOf |
Oceanus Procellarum
ⓘ
surface form:
Oceanus Procellarum region
|
| scientificInterest |
lunar volcanism studies
ⓘ
mare basalt composition ⓘ |
| surfaceAge | Imbrian period ⓘ |
| surfaceComposition | basalt ⓘ |
| surfaceSampleContext | Apollo 12 returned samples from nearby mare basalts ⓘ |
| surfaceType | basaltic ⓘ |
| visibleTo | naked eye from Earth ⓘ |
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: Mare Cognitum region, Oceanus Procellarum Description of subject: The Mare Cognitum region in Oceanus Procellarum is a basaltic lunar mare on the Moon’s near side, notable as the site of NASA’s Apollo 12 crewed landing.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Oceanus Procellarum region
this entity surface form:
Oceanus Procellarum
subject surface form:
Copernicus (lunar crater)
this entity surface form:
Oceanus Procellarum
subject surface form:
Copernicus (lunar crater)
this entity surface form:
Oceanus Procellarum
this entity surface form:
Mare Cognitum region