question: rock:gem
choices.label: A B C D
choices.text: electronic product:computer river water:spring water arable land:mountainous juice:drink
explanation: "gem" is a kind of "rock", and "gem" belongs to "rock". "computer" is a kind of "electronic product". "river water" is surface water, "spring water" is a natural outcrop of groundwater, and "spring water" does not belong to "river water". some "arable land" is "mountain", and some "mountain" is "arable land", but "mountain" does not belong to "arable land". "juice" is a type of "drink", but the word order is inconsistent.
relation: rock gem R2.2
relation: river water spring water R2.4
relation: arable land mountainous R2.7
relation: juice drink R2.2