question: snowflake:sea
choices.label: A B C D
choices.text: green leaf:land stars:universe white cloud:sky trees:forest
explanation: "snowflakes" fall into the "sea" and eventually merge into the "sea". the "green leaves" fall on the "land" and eventually merge into the "land" after they rot. the "stars" are part of the "universe", and do not merge into the "universe". the "white cloud" floats in the "sky", but does not eventually merge into the "sky". "trees" are part of a "forest".
relation: snowflake sea R3.10
relation: green leaf land R3.10
relation: stars universe R2.3
relation: trees forest R2.3