Tracy’s Rock
E824737
Tracy’s Rock is a notable boulder on the Moon in the Taurus–Littrow valley, photographed and sampled by the Apollo 17 astronauts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tracy’s Rock canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9837421 — 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: Tracy’s Rock Context triple: [Taurus–Littrow valley, containsNamedFeature, Tracy’s Rock]
-
A.
Jefferson Rock
Jefferson Rock is a famous rock formation and viewpoint in Harpers Ferry National Historical Park that offers sweeping views of the confluence of the Potomac and Shenandoah rivers.
-
B.
Pulpit Rock
Pulpit Rock is a distinctive coastal rock formation on the Isle of Portland in Dorset, England, popular as a dramatic landmark and climbing spot.
-
C.
Cranberry Rock
Cranberry Rock is a prominent rocky summit within the Stiperstones ridge in Shropshire, England, known for its rugged outcrops and scenic views.
-
D.
Pillar Rocks
Pillar Rocks are a famous set of towering natural rock pillars and a popular scenic viewpoint near Kodaikanal in Tamil Nadu, India.
-
E.
Worry Rock
Worry Rock is a song by the American punk rock band Green Day from their 1997 album *Nimrod*.
- 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: Tracy’s Rock Target entity description: Tracy’s Rock is a notable boulder on the Moon in the Taurus–Littrow valley, photographed and sampled by the Apollo 17 astronauts.
-
A.
Jefferson Rock
Jefferson Rock is a famous rock formation and viewpoint in Harpers Ferry National Historical Park that offers sweeping views of the confluence of the Potomac and Shenandoah rivers.
-
B.
Pulpit Rock
Pulpit Rock is a distinctive coastal rock formation on the Isle of Portland in Dorset, England, popular as a dramatic landmark and climbing spot.
-
C.
Cranberry Rock
Cranberry Rock is a prominent rocky summit within the Stiperstones ridge in Shropshire, England, known for its rugged outcrops and scenic views.
-
D.
Pillar Rocks
Pillar Rocks are a famous set of towering natural rock pillars and a popular scenic viewpoint near Kodaikanal in Tamil Nadu, India.
-
E.
Worry Rock
Worry Rock is a song by the American punk rock band Green Day from their 1997 album *Nimrod*.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
geological feature on the Moon
ⓘ
lunar boulder ⓘ |
| appearsIn |
Apollo 17 still photography archive
ⓘ
linked to:
Apollo 17
Apollo 17 surface television footage ⓘ |
| associatedProgram | Apollo program ⓘ |
| associatedWithCommandModule | America ⓘ |
| associatedWithEvent | last crewed Apollo lunar landing mission ⓘ |
| associatedWithLunarModule | Challenger ⓘ |
| countryOperatingMission |
United States
ⓘ
linked to:
United States of America
|
| documentedIn |
Apollo 17 mission photographs
ⓘ
Apollo 17 preliminary science report ⓘ
linked to:
Apollo 17
|
| explorationToolUsed |
Lunar Roving Vehicle
ⓘ
geology sampling tools ⓘ |
| exploredDuringEVA |
Apollo 17 EVA 2
ⓘ
linked to:
Apollo 17
|
| geologicalContext | boulder from nearby massif or crater ejecta ⓘ |
| hasAlternativeName |
Split Rock
ⓘ
Station 6 boulder ⓘ |
| hasCoordinateSystem | selenographic coordinates ⓘ |
| hasCulturalSignificance | personal dedication by astronaut to his child ⓘ |
| hasNotableFeature |
large split boulder morphology
ⓘ
surrounded by disturbed regolith and tracks ⓘ |
| hasScientificInterest |
impact processes on the Moon
ⓘ
lunar geology ⓘ regolith development ⓘ |
| isIconicImageOf |
Apollo 17 surface exploration
ⓘ
linked to:
Apollo 17
human exploration of the Moon ⓘ |
| isNear |
Apollo 17 Lunar Roving Vehicle tracks
ⓘ
South Massif in Taurus–Littrow ⓘ
linked to:
Taurus Mountains (Moon)
|
| isPartOf | Apollo 17 Station 6 geological station ⓘ |
| locatedIn | Taurus–Littrow valley ⓘ |
| locatedOn | Moon ⓘ |
| missionLandingSiteRegion |
Taurus–Littrow valley landing site
ⓘ
linked to:
Taurus–Littrow valley
|
| missionRole | key sampling site for Apollo 17 geology objectives ⓘ |
| namedAfter | Tracy Cernan ⓘ |
| namedBy | Eugene Cernan ⓘ |
| namedForRelationship | daughter of Eugene Cernan ⓘ |
| photographedByMission | Apollo 17 ⓘ |
| regionOf |
Mare Serenitatis–Taurus–Littrow boundary area
ⓘ
linked to:
Taurus–Littrow valley
|
| sampledByMission | Apollo 17 ⓘ |
| sampledDuringMissionNumber | Apollo 17 ⓘ |
| sampledDuringYear | 1972 ⓘ |
| samplesStoredAt | NASA Johnson Space Center lunar sample laboratory ⓘ |
| sampleTypeCollected |
regolith samples
ⓘ
rock samples ⓘ |
| spaceAgencyOperatingMission | NASA ⓘ |
| visitedByAstronaut |
Eugene Cernan
ⓘ
Harrison Schmitt ⓘ
linked to:
Harrison H. Schmitt
|
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: Tracy’s Rock Description of subject: Tracy’s Rock is a notable boulder on the Moon in the Taurus–Littrow valley, photographed and sampled by the Apollo 17 astronauts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.