question: sprayer:pesticides
choices.label: A B C D
choices.text: electric vehicles:batteries scabbard:sword cd:data bookcase:books
explanation: "sprayer" and "pesticide" are used together, and "pesticide" must be sprayed by "sprayer". "electric vehicle" and "battery" are not used together, and "battery" is a part of "electric vehicle". the "scabbard" and "sword" are used together , and the "scabbard" must be used to install the "sword". "data" can be stored on a "cd". "books" can be placed in the "bookcase".
relation: sprayer pesticides R3.10
relation: electric vehicles batteries R2.3
relation: scabbard sword R3.10
relation: cd data R3.8
relation: bookcase books R3.5