Chang’e 4
E832565
Chang’e 4 is a Chinese lunar mission best known for achieving the first soft landing and rover exploration on the far side of the Moon.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T9889991 — 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: Chang’e 4 Context triple: [Chang’e lunar exploration program, componentMission, Chang’e 4]
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A.
Chang’e 3
Chang’e 3 is a Chinese lunar exploration mission that successfully soft-landed on the Moon in 2013 and deployed the Yutu rover to conduct surface and astronomical observations.
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B.
Luna 20
Luna 20 was a Soviet robotic lunar sample-return mission that successfully collected and returned soil from the Moon’s surface in 1972.
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C.
Chang’e 2
Chang’e 2 is a Chinese lunar probe launched in 2010 that orbited the Moon for high-resolution mapping before traveling on to study the asteroid 4179 Toutatis.
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D.
Luna 25
Luna 25 is a Russian lunar lander mission aimed at conducting scientific research and demonstrating landing technology near the Moon’s south polar region.
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E.
Tianwen-1
Tianwen-1 is China’s first interplanetary mission, consisting of an orbiter, lander, and rover sent to study Mars from orbit and on the surface.
- 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: Chang’e 4 Target entity description: Chang’e 4 is a Chinese lunar mission best known for achieving the first soft landing and rover exploration on the far side of the Moon.
-
A.
Chang’e 3
Chang’e 3 is a Chinese lunar exploration mission that successfully soft-landed on the Moon in 2013 and deployed the Yutu rover to conduct surface and astronomical observations.
-
B.
Luna 20
Luna 20 was a Soviet robotic lunar sample-return mission that successfully collected and returned soil from the Moon’s surface in 1972.
-
C.
Chang’e 2
Chang’e 2 is a Chinese lunar probe launched in 2010 that orbited the Moon for high-resolution mapping before traveling on to study the asteroid 4179 Toutatis.
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D.
Luna 25
Luna 25 is a Russian lunar lander mission aimed at conducting scientific research and demonstrating landing technology near the Moon’s south polar region.
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E.
Tianwen-1
Tianwen-1 is China’s first interplanetary mission, consisting of an orbiter, lander, and rover sent to study Mars from orbit and on the surface.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Chinese space mission
ⓘ
lunar lander mission ⓘ robotic lunar exploration mission ⓘ |
| achievedFirst | first mission to perform in-situ measurements on the lunar far side ⓘ |
| carriesInstrument |
Advanced Small Analyzer for Neutrals
NERFINISHED
ⓘ
German Lunar Lander Neutron and Dosimetry experiment NERFINISHED ⓘ Low Frequency Spectrometer NERFINISHED ⓘ Lunar Lander Neutrons and Dosimetry experiment NERFINISHED ⓘ Lunar Lander Terrain Camera NERFINISHED ⓘ Lunar Penetrating Radar NERFINISHED ⓘ Panoramic Camera NERFINISHED ⓘ Swedish Advanced Small Analyzer for Neutrals NERFINISHED ⓘ Visible and Near-Infrared Imaging Spectrometer NERFINISHED ⓘ |
| carriesPayload | biosphere experiment with seeds and insect eggs ⓘ |
| country | China ⓘ |
| follows | Chang’e 3 mission design ⓘ |
| landerMass | approximately 1200 kg ⓘ |
| landingDate | 2019-01-03 ⓘ |
| landingRegion | South Pole–Aitken basin NERFINISHED ⓘ |
| landingSite | Von Kármán crater NERFINISHED ⓘ |
| launchDate | 2018-12-07 ⓘ |
| launchSite | Xichang Satellite Launch Center NERFINISHED ⓘ |
| launchVehicle | Long March 3B NERFINISHED ⓘ |
| manufacturer | China Academy of Space Technology NERFINISHED ⓘ |
| missionObjective |
conduct low-frequency radio astronomy
ⓘ
study lunar far-side geology ⓘ study lunar subsurface structure ⓘ study lunar surface composition ⓘ study solar wind interaction with the Moon ⓘ test biological growth in lunar environment ⓘ |
| missionType |
lunar lander
ⓘ
lunar rover ⓘ |
| notableFor |
first rover exploration on the far side of the Moon
ⓘ
first soft landing on the far side of the Moon ⓘ |
| operator | China National Space Administration NERFINISHED ⓘ |
| partOf | Chang’e program NERFINISHED ⓘ |
| predecessor | Chang’e 3 NERFINISHED ⓘ |
| primaryBody | Moon NERFINISHED ⓘ |
| program | Chinese Lunar Exploration Program NERFINISHED ⓘ |
| relatedMission | Chang’e 5 NERFINISHED ⓘ |
| relaySatelliteOrbit | Earth–Moon L2 halo orbit ⓘ |
| roverMass | approximately 140 kg ⓘ |
| roverName | Yutu-2 NERFINISHED ⓘ |
| spaceAgency | China National Space Administration NERFINISHED ⓘ |
| spacecraftComponent |
Chang’e 4 lander
NERFINISHED
ⓘ
Yutu-2 rover NERFINISHED ⓘ |
| status | operational (lander and rover continuing science operations beyond design life) ⓘ |
| targetHemisphere | lunar far side ⓘ |
| usesRelaySatellite | Queqiao NERFINISHED ⓘ |
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: Chang’e 4 Description of subject: Chang’e 4 is a Chinese lunar mission best known for achieving the first soft landing and rover exploration on the far side of the Moon.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Yutu-2