question: beat:melody
choices.label: A B C D
choices.text: line:color sketch:crosstalk woodcut:sculpture styling:art
explanation: "beat" is part of "melody". "line" is not part of "color". "sketch" and "crosstalk" are comedy programs, and "sketch" is not a part of "crosstalk". "woodcut" is a kind of "sculpture", and "woodcut" is a part of "sculpture". one of the expression techniques of "art" is "styling", but "styling" is not an integral part of "art".
relation: line color R2.4
relation: sketch crosstalk R2.4
relation: styling art R3.10