Mare Tranquillitatis
E134588
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.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Mare Tranquillitatis canonical | 26 |
| Mare Tranquillitatis region | 4 |
| Sea of Tranquility | 4 |
| Mare Tranquillitatis basalt plains | 1 |
| Mare Tranquillitatis basin | 1 |
| Mare Tranquillitatis on the Moon | 1 |
| Sea of Tranquility on the Moon | 1 |
| Sea of Tranquillity | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1180588 — 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 Tranquillitatis Context triple: [Albedo 0.39, hasTrack, Mare Tranquillitatis]
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A.
Baade lunar crater
Baade lunar crater is a large impact feature on the Moon’s far side named in honor of German astronomer Walter Baade.
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B.
Copernicus Crater on the Moon
Copernicus Crater on the Moon is a prominent, relatively young lunar impact crater in the Moon’s eastern Oceanus Procellarum region, named in honor of the Renaissance astronomer Nicolaus Copernicus.
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C.
Gale Crater
Gale Crater is a large impact crater on Mars that has been extensively explored for its layered geological history and past habitability clues.
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D.
Caloris Basin
Caloris Basin is one of the largest and youngest impact basins in the Solar System, forming a prominent multi-ringed geological feature on the planet Mercury.
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E.
Ernst Mach crater
Ernst Mach crater is a large impact crater on the Moon’s far side named in honor of the Austrian physicist and philosopher Ernst Mach.
- 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 Tranquillitatis Target entity description: 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.
-
A.
Baade lunar crater
Baade lunar crater is a large impact feature on the Moon’s far side named in honor of German astronomer Walter Baade.
-
B.
Copernicus Crater on the Moon
Copernicus Crater on the Moon is a prominent, relatively young lunar impact crater in the Moon’s eastern Oceanus Procellarum region, named in honor of the Renaissance astronomer Nicolaus Copernicus.
-
C.
Gale Crater
Gale Crater is a large impact crater on Mars that has been extensively explored for its layered geological history and past habitability clues.
-
D.
Caloris Basin
Caloris Basin is one of the largest and youngest impact basins in the Solar System, forming a prominent multi-ringed geological feature on the planet Mercury.
-
E.
Ernst Mach crater
Ernst Mach crater is a large impact crater on the Moon’s far side named in honor of the Austrian physicist and philosopher Ernst Mach.
- F. None of above. chosen
Statements (51)
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 Tranquillitatis Description of subject: 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.
Referenced by (39)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
subject linked to:
Tranquility module
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
linked to: Mare Tranquillitatis
subject linked to:
Luna 21 (flyby imaging context)
linked to: Mare Tranquillitatis
subject linked to:
lunar crater Arago