question: rabbit:green grass
choices.label: A B C D
choices.text: silkworm:mulberry leaf dog:rat fish:river water worm:chicken
explanation: the food of "green grass" is "rabbit" the food of "mulberry leaf" is "silkworm" "dogs" and "rats" are animals the activity location of "fish" is "river water" the food of "chicken" is "worm"
relation: green grass rabbit R3.10
relation: mulberry leaf silkworm R3.10
relation: rat dog R2.4
relation: river water fish R3.6
relation: worm chicken R3.10