Fra Mauro formation
E261913
The Fra Mauro formation is a hilly, heavily cratered lunar region in the Moon’s near side highlands, best known as the landing site of NASA’s Apollo 14 mission and as an important area for studying ancient lunar impact ejecta.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fra Mauro formation canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2388976 — 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: Fra Mauro formation Context triple: [Apollo 14, lunarLandingSite, Fra Mauro formation]
-
A.
Marsili Basin
Marsili Basin is a deep submarine basin in the southern Tyrrhenian Sea associated with active volcanic and tectonic processes.
-
B.
Bonaparte Basin
Bonaparte Basin is a large offshore sedimentary basin off northern Australia known for its significant oil and gas resources.
-
C.
Parece Vela Basin
Parece Vela Basin is an oceanic basin in the western Pacific Ocean associated with the Philippine Sea Plate and known for its complex tectonic and volcanic features.
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D.
Lomonosov Ridge
Lomonosov Ridge is a major underwater mountain range in the Arctic Ocean that stretches across the polar basin and plays a key role in regional geology and continental shelf claims.
-
E.
Hadley–Apennine region
The Hadley–Apennine region is a prominent area on the Moon near the Apennine Mountains and Hadley Rille, noted for its rugged terrain and scientific significance as the exploration site of Apollo 15.
- 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: Fra Mauro formation Target entity description: The Fra Mauro formation is a hilly, heavily cratered lunar region in the Moon’s near side highlands, best known as the landing site of NASA’s Apollo 14 mission and as an important area for studying ancient lunar impact ejecta.
-
A.
Marsili Basin
Marsili Basin is a deep submarine basin in the southern Tyrrhenian Sea associated with active volcanic and tectonic processes.
-
B.
Bonaparte Basin
Bonaparte Basin is a large offshore sedimentary basin off northern Australia known for its significant oil and gas resources.
-
C.
Parece Vela Basin
Parece Vela Basin is an oceanic basin in the western Pacific Ocean associated with the Philippine Sea Plate and known for its complex tectonic and volcanic features.
-
D.
Lomonosov Ridge
Lomonosov Ridge is a major underwater mountain range in the Arctic Ocean that stretches across the polar basin and plays a key role in regional geology and continental shelf claims.
-
E.
Hadley–Apennine region
The Hadley–Apennine region is a prominent area on the Moon near the Apennine Mountains and Hadley Rille, noted for its rugged terrain and scientific significance as the exploration site of Apollo 15.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
lunar geological formation
ⓘ
lunar surface feature ⓘ |
| adjacentTo | Fra Mauro crater ⓘ |
| age | Imbrian ⓘ |
| ApolloLandingSite | Apollo 14 ⓘ |
| associatedWith |
Imbrium Basin ejecta zone
ⓘ
surface form:
Imbrium impact event
|
| cataloguedIn | USGS lunar geologic maps ⓘ |
| coordinateSystem | selenographic coordinates ⓘ |
| geologicalContext | Imbrium Basin ejecta blanket ⓘ |
| landingDate | 1971-02-05 ⓘ |
| locatedIn | lunar highlands ⓘ |
| locatedOn | Moon ⓘ |
| locatedOnSide | near side of the Moon ⓘ |
| mappedBy |
Apollo orbital photography
ⓘ
Lunar Orbiter program ⓘ
surface form:
Lunar Orbiter missions
|
| namedAfter | Fra Mauro crater ⓘ |
| notableFor |
diverse impact-related rock types
ⓘ
exposure of deep Imbrium Basin materials ⓘ |
| observedBy |
Earth-based telescopes
ⓘ
spacecraft imaging ⓘ |
| partOf | nearside lunar highlands geological units ⓘ |
| regionType | lunar highlands region ⓘ |
| relativeAge | formed early in the Moon’s geological history ⓘ |
| researchFocus |
evolution of the lunar crust
ⓘ
lunar impact chronology ⓘ |
| sampledBy |
Apollo 14
ⓘ
surface form:
Apollo 14 astronauts
|
| samplesReturnedTo | Earth ⓘ |
| scientificSignificance |
important for studying ancient lunar impact ejecta
ⓘ
key site for sampling Imbrium Basin materials ⓘ |
| studiedBy |
NASA
ⓘ
lunar geologists ⓘ |
| surfaceComposition |
breccias
ⓘ
highlands material ⓘ impact-melt rocks ⓘ |
| terrainType |
heavily cratered
ⓘ
hilly ⓘ |
| visitedByAstronaut |
Alan Shepard
ⓘ
surface form:
Alan B. Shepard Jr.
Edgar D. Mitchell ⓘ Stuart A. Roosa ⓘ |
| visitedByMission | Apollo 14 ⓘ |
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: Fra Mauro formation Description of subject: The Fra Mauro formation is a hilly, heavily cratered lunar region in the Moon’s near side highlands, best known as the landing site of NASA’s Apollo 14 mission and as an important area for studying ancient lunar impact ejecta.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Mare Cognitum