question: train:track:run
choices.label: A B C D
choices.text: computer:keyboard:surf camera:lens:take pictures aircraft:airport:fly oil tanker:river and sea:sail
explanation: the "train" "runs" on the "track", where the "track" and the "train" are located. the "train" will "run". the "keyboard" is a part of the "computer", and basically all "computers" can "surf". the component of a "camera" is the "lens", and the "camera" is used to "take pictures". "aircrafts" are "flying" in the sky. the "airport" is the place where the "aircraft" stays and takes off, not the place where it flies. "oil tanker" "sailing" on the "river and sea".
relation: train track R3.5
relation: train run R4.1
relation: keyboard computer R2.3
relation: lens camera R2.3
relation: aircraft fly R3.10
relation: aircraft airport R3.5
relation: oil tanker river and sea R3.5
relation: oil tanker sail R4.1