Hall crater
E496682
Hall crater is a prominent impact feature on Mars’s moon Phobos, notable to planetary scientists studying the moon’s heavily cratered surface.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Hall crater canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5051065 — 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: Hall crater Context triple: [Phobos, hasNotableCrater, Hall crater]
-
A.
Roche crater
Roche crater is a prominent impact feature on Mars’s moon Phobos, named after the French astronomer Édouard Roche.
-
B.
Sherman Crater
Sherman Crater is a prominent volcanic crater on the south side of Mount Baker in Washington State, known for its active fumaroles and role in monitoring the volcano’s geothermal and eruptive activity.
-
C.
Endurance Crater
Endurance Crater is a Martian impact crater on Meridiani Planum that was extensively studied by NASA’s Opportunity rover for insights into the planet’s geologic and aqueous history.
-
D.
Occator Crater
Occator Crater is a prominent impact crater on the dwarf planet Ceres, best known for its bright salt deposits that suggest past subsurface brine activity.
-
E.
Schwarzschild crater
Schwarzschild crater is a large impact crater on the far side of the Moon, notable for its heavily eroded rim and complex interior features.
- 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: Hall crater Target entity description: Hall crater is a prominent impact feature on Mars’s moon Phobos, notable to planetary scientists studying the moon’s heavily cratered surface.
-
A.
Roche crater
Roche crater is a prominent impact feature on Mars’s moon Phobos, named after the French astronomer Édouard Roche.
-
B.
Sherman Crater
Sherman Crater is a prominent volcanic crater on the south side of Mount Baker in Washington State, known for its active fumaroles and role in monitoring the volcano’s geothermal and eruptive activity.
-
C.
Endurance Crater
Endurance Crater is a Martian impact crater on Meridiani Planum that was extensively studied by NASA’s Opportunity rover for insights into the planet’s geologic and aqueous history.
-
D.
Occator Crater
Occator Crater is a prominent impact crater on the dwarf planet Ceres, best known for its bright salt deposits that suggest past subsurface brine activity.
-
E.
Schwarzschild crater
Schwarzschild crater is a large impact crater on the far side of the Moon, notable for its heavily eroded rim and complex interior features.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
impact crater
ⓘ
lunar crater ⓘ |
| belongsToCategory | Craters on Phobos ⓘ |
| celestialBodyType | surface feature ⓘ |
| discoveredOnBody | Phobos ⓘ |
| eponym | Asaph Hall ⓘ |
| featureType | crater ⓘ |
| hasCoordinateSystem | Phobos coordinate system ⓘ |
| hasMorphology | impact structure ⓘ |
| hasNamingAuthority | International Astronomical Union ⓘ |
| hasRelationTo |
Stickney crater
ⓘ
other named craters on Phobos ⓘ |
| hasSurfaceCharacteristic | heavily cratered terrain ⓘ |
| isPartOf | surface of Phobos ⓘ |
| isStudiedBy | planetary scientists ⓘ |
| isUsedFor |
age dating of Phobos surface units
ⓘ
crater counting studies ⓘ geological mapping of Phobos ⓘ |
| locatedIn | Mars system ⓘ |
| locatedOn | Phobos ⓘ |
| namedAfter | Asaph Hall ⓘ |
| observedBy |
Mariner 9
ⓘ
Mars Express ⓘ Mars Global Surveyor ⓘ Mars Reconnaissance Orbiter ⓘ Viking 1 Orbiter ⓘ
linked to:
Viking Orbiter
Viking 2 Orbiter ⓘ
linked to:
Viking Orbiter
|
| orbitsWith | Mars ⓘ |
| surfaceFeatureOf | Phobos ⓘ |
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: Hall crater Description of subject: Hall crater is a prominent impact feature on Mars’s moon Phobos, notable to planetary scientists studying the moon’s heavily cratered surface.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.