Sojourner
E410424
Sojourner was the first successful Mars rover, a small six-wheeled robotic vehicle that explored the Martian surface in 1997 as part of NASA’s Mars Pathfinder mission.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sojourner canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T4065097 — 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: Sojourner Context triple: [Mars Pathfinder, carriedRover, Sojourner]
-
A.
Whydah
Whydah was a prominent West African coastal port city that became a major center for the Atlantic slave trade during the era of the Kingdom of Dahomey.
-
B.
Marto
Marto is a writer best known for contributing to the song "Young, Wild & Free."
-
C.
Cassin
Cassin is a French surname most notably borne by René Cassin, a Nobel Peace Prize–winning jurist and co-author of the Universal Declaration of Human Rights.
-
D.
Tabot
Tabot is a consecrated replica of the Ark of the Covenant central to Ethiopian Orthodox worship and the celebration of the Divine Liturgy.
-
E.
Humphreys
Humphreys is a small unincorporated community located within Lea County in southeastern New Mexico.
- 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: Sojourner Target entity description: Sojourner was the first successful Mars rover, a small six-wheeled robotic vehicle that explored the Martian surface in 1997 as part of NASA’s Mars Pathfinder mission.
-
A.
Whydah
Whydah was a prominent West African coastal port city that became a major center for the Atlantic slave trade during the era of the Kingdom of Dahomey.
-
B.
Marto
Marto is a writer best known for contributing to the song "Young, Wild & Free."
-
C.
Cassin
Cassin is a French surname most notably borne by René Cassin, a Nobel Peace Prize–winning jurist and co-author of the Universal Declaration of Human Rights.
-
D.
Tabot
Tabot is a consecrated replica of the Ark of the Covenant central to Ethiopian Orthodox worship and the celebration of the Divine Liturgy.
-
E.
Humphreys
Humphreys is a small unincorporated community located within Lea County in southeastern New Mexico.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Mars rover
ⓘ
NASA space probe ⓘ planetary rover ⓘ robotic spacecraft ⓘ uncrewed vehicle ⓘ |
| arrivalDateOnMars | 1997-07-04 ⓘ |
| communicationSystem | UHF radio relay via Mars Pathfinder lander ⓘ |
| computerClockSpeed | 2 MHz ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| discovererOrDesigner |
Jet Propulsion Laboratory
ⓘ
surface form:
NASA Jet Propulsion Laboratory
|
| energyStorage | non-rechargeable batteries ⓘ |
| firstDriveOnMarsDate | 1997-07-06 ⓘ |
| firstOf | first successful Mars rover ⓘ |
| height | 0.30 meters ⓘ |
| landingRegion | Chryse Planitia ⓘ |
| landingSite |
Mars Pathfinder
ⓘ
surface form:
Mars Pathfinder landing site
|
| lastCommunicationDate | 1997-09-27 ⓘ |
| launchDate | 1996-12-04 ⓘ |
| launchSite | Cape Canaveral Air Force Station Space Launch Complex 17 ⓘ |
| launchVehicle |
Delta II
ⓘ
surface form:
Delta II 7925
|
| length | 0.65 meters ⓘ |
| locationOfOperations | Ares Vallis, Chryse Planitia, Mars ⓘ |
| mass | 10.6 kilograms ⓘ |
| maximumSpeed | 0.01 meters per second ⓘ |
| memory | 0.5 MB RAM ⓘ |
| missionDurationActual | 83 sols ⓘ |
| missionDurationPlanned | 7 sols ⓘ |
| missionType | Mars surface exploration ⓘ |
| namedAfter | Sojourner Truth ⓘ |
| navigationType | autonomous hazard avoidance ⓘ |
| notableTarget |
Barnacle Bill rock
ⓘ
Scooby-Doo rock ⓘ Yogi rock ⓘ |
| numberOfWheels | 6 ⓘ |
| onboardComputer |
Intel 8085
ⓘ
surface form:
Intel 80C85
|
| operator |
NASA
ⓘ
Jet Propulsion Laboratory ⓘ
surface form:
NASA Jet Propulsion Laboratory
|
| partOf | Mars Pathfinder ⓘ |
| powerSource | solar panels ⓘ |
| program |
Mars Exploration Program
ⓘ
surface form:
NASA Mars Exploration Program
|
| propulsionType | electric motor ⓘ |
| scienceInstruments |
APXS (Alpha Particle X-ray Spectrometer)
ⓘ
surface form:
Alpha Proton X-ray Spectrometer
imaging system ⓘ |
| scienceObjectives |
analyze Martian rocks and soil
ⓘ
demonstrate rover mobility on Mars ⓘ |
| spacecraftBus | custom JPL rover design ⓘ |
| status | mission complete ⓘ |
| thermalControl | aerogel insulation ⓘ |
| wheelDesign | aluminum wheels with cleats ⓘ |
| width | 0.48 meters ⓘ |
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: Sojourner Description of subject: Sojourner was the first successful Mars rover, a small six-wheeled robotic vehicle that explored the Martian surface in 1997 as part of NASA’s Mars Pathfinder mission.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.