question: fireworks:night sky
choices.label: A B C D
choices.text: pencil:eraser wealth:bank roll film:photo train:track
explanation: The "night sky" is the place where the "fireworks" bloom, and the "fireworks" must bloom in the "night sky" to be presented. both "pencil" and "eraser" belong to stationery. "wealth" can be kept in a "bank" or elsewhere. "photos" are developed from "roll film". The place where the "train" runs is the "track", and the "train" must be on the "track" to run.
relation: fireworks night sky R3.6
relation: pencil eraser R2.4
relation: wealth bank R3.10
relation: roll film photo R3.3
relation: train track R3.6