question: wheat:wheat ear:wheat kernel
choices.label: A B C D
choices.text: car:wheel:tire chess:go:pieces school:classroom:student house:room:bedroom
explanation: "wheat ear" is part of "wheat", and "wheat kernel" is part of "wheat ear". the "wheel" is part of the "car" and the "tire" is part of the "wheel". "chess" includes "go", and it cannot be said that "go" is a component of "chess". a "classroom" is a place where "students" learn, and "students" are part of a "school". "room" includes "bedroom", and "bedroom" is part of "house".
relation: wheat ear wheat R2.3
relation: wheat ear wheat kernel R2.3
relation: wheel car R2.3
relation: wheel tire R2.3
relation: go chess R2.2
relation: student classroom R3.5
relation: bedroom room R2.2