question: mountain:land
choices.label: A B C D
choices.text: waves:ocean rainstorm:thunder and lightning white cloud:blue sky electricity:grid
explanation: "mountain" is part of "land". "wave" is part of "ocean". weather phenomena include "rainstorm" and "thunder and lightning". there are "white clouds" in the "blue sky". "electricity" is transported and distributed by the "grid".
relation: mountain land R2.3
relation: waves ocean R2.3
relation: rainstorm thunder and lightning R2.4
relation: white cloud blue sky R3.10
relation: electricity grid R3.10