question: astronauts:moon exploration
choices.label: A B C D
choices.text: airline:flight cleaner:cleaning volunteer:organization pharmacy:pharmaceutical
explanation: "astronaut" is a profession, "moon exploration" is one of the job contents of an "astronaut", and an "astronaut" needs "moon exploration". "airline" is an organization, not a profession, and the job content of "airline" is not "flight". "cleaner" is a profession, "cleaning" is the work content of a "cleaner", and "cleaner" needs "cleaning". "volunteer" is an identity, not a profession, and the work of a "volunteer" is not an "organization". "pharmacy" is an organization, not a profession.
relation: astronauts moon exploration R3.10
relation: cleaner cleaning R3.10