Viking 2
E112199
Viking 2 was a NASA spacecraft and lander that conducted scientific investigations on the surface of Mars as part of the Viking program in the 1970s.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Viking 2 canonical | 7 |
| Viking 2 lander | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T934003 — 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: Viking 2 Context triple: [Mars, exploredBy, Viking 2]
-
A.
Viking 1
Viking 1 was a NASA spacecraft that became the first successful lander on Mars, conducting detailed imaging and scientific experiments on the Martian surface starting in 1976.
-
B.
Mariner 4
Mariner 4 was a NASA spacecraft that performed the first successful flyby of Mars in 1965, returning the first close-up images of another planet.
-
C.
Voyager 2
Voyager 2 is a NASA space probe launched in 1977 that conducted historic flybys of all four outer giant planets and is now traveling through interstellar space.
-
D.
Pioneer 11
Pioneer 11 is a NASA space probe launched in 1973 that conducted pioneering flybys of Jupiter and Saturn, helping to open the outer solar system to exploration.
-
E.
Mariner 10
Mariner 10 was a NASA space probe launched in 1973 that became the first spacecraft to visit Mercury and the first to use a gravity-assist maneuver to reach another planet.
- 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: Viking 2 Target entity description: Viking 2 was a NASA spacecraft and lander that conducted scientific investigations on the surface of Mars as part of the Viking program in the 1970s.
-
A.
Viking 1
Viking 1 was a NASA spacecraft that became the first successful lander on Mars, conducting detailed imaging and scientific experiments on the Martian surface starting in 1976.
-
B.
Mariner 4
Mariner 4 was a NASA spacecraft that performed the first successful flyby of Mars in 1965, returning the first close-up images of another planet.
-
C.
Voyager 2
Voyager 2 is a NASA space probe launched in 1977 that conducted historic flybys of all four outer giant planets and is now traveling through interstellar space.
-
D.
Pioneer 11
Pioneer 11 is a NASA space probe launched in 1973 that conducted pioneering flybys of Jupiter and Saturn, helping to open the outer solar system to exploration.
-
E.
Mariner 10
Mariner 10 was a NASA space probe launched in 1973 that became the first spacecraft to visit Mercury and the first to use a gravity-assist maneuver to reach another planet.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Mars lander
ⓘ
NASA spacecraft ⓘ planetary mission ⓘ space probe ⓘ uncrewed spacecraft ⓘ |
| carriedInstrument |
X-ray fluorescence spectrometer
ⓘ
biology experiment package ⓘ gas chromatograph–mass spectrometer ⓘ gas exchange experiment ⓘ imaging system ⓘ labeled release experiment ⓘ meteorology instrument system ⓘ pyrolytic release experiment ⓘ seismometer ⓘ |
| communicationBand |
S-band
ⓘ
X-band ⓘ |
| countryOfOperator |
United States of America
ⓘ
surface form:
United States
|
| endOfLanderMission | 1980-04-11 ⓘ |
| endOfOrbiterMission | 1978-07-25 ⓘ |
| hasComponent |
Viking 2
self-linksurface differs
ⓘ
surface form:
Viking 2 lander
Viking Orbiter ⓘ
surface form:
Viking 2 orbiter
|
| landingBody | Mars ⓘ |
| landingDate | 1976-09-03 ⓘ |
| landingSite | Utopia Planitia ⓘ |
| landingSiteLatitude | 48.0° N ⓘ |
| landingSiteLongitude | 225.7° W ⓘ |
| launchDate | 1975-09-09 ⓘ |
| launchSite |
Cape Canaveral LC-41
ⓘ
surface form:
Cape Canaveral Air Force Station Space Launch Complex 41
Cape Canaveral ⓘ
surface form:
Cape Canaveral, Florida
|
| launchVehicle | Titan IIIE-Centaur ⓘ |
| missionDestination | Mars ⓘ |
| missionObjective |
analyze Martian soil and rocks
ⓘ
measure meteorological conditions on Mars ⓘ obtain high-resolution images of the Martian surface ⓘ search for evidence of life on Mars ⓘ study the Martian surface and atmosphere ⓘ |
| missionType |
Mars lander
ⓘ
Mars orbiter ⓘ |
| notableResult |
conducted biological experiments to detect possible life
ⓘ
performed in-situ analysis of Martian soil chemistry ⓘ provided long-term meteorological data from Mars ⓘ returned high-resolution images of the Martian surface ⓘ |
| operator | NASA ⓘ |
| partOf | Viking program ⓘ |
| planetaryProtectionCategory | Category IV ⓘ |
| powerSource | radioisotope thermoelectric generator ⓘ |
| precededBy | Viking 1 ⓘ |
| program | Viking program ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraftBus | Viking bus ⓘ |
| targetPlanet | Mars ⓘ |
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: Viking 2 Description of subject: Viking 2 was a NASA spacecraft and lander that conducted scientific investigations on the surface of Mars as part of the Viking program in the 1970s.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Viking 2 lander