choices.label: A B C D
choices.text: wheat:bread automobile:exhaust ocean:island groundwater:fountain
explanation: what comes out of a "volcano" eruption is "lava". the raw material of "bread" is flour, and the product of "wheat" after grinding is flour, not "bread". when the "automobile" is driving, it emits "exhausts". "islands" are in the "ocean", and the product of the "ocean" is not "islands". one form of letting "groundwater" flow above the ground is through a "fountain", and the product of "groundwater" is not a "fountain".
relation: volcano lava R3.10
relation: wheat bread R3.7
relation: automobile exhaust R3.10
relation: ocean island R3.6
relation: groundwater fountain R3.10