question: justice:injustice
choices.label: A B C D
choices.text: rational numbers:irrational numbers morning:tonight plants:animals forgiveness:resentment
explanation: "justice" and "injustice" are completely complementary. "rational numbers" and "irrational numbers" are completely complementary. "morning" and "night" belong to two time periods in a day, and "morning" and "tonight" have no obvious logical relationship. "plants" and "animals" are one category, but in addition to "plants" and "animals" there are microorganisms. forgiveness is the opposite of resentment.
relation: justice injustice R2.5
relation: rational numbers irrational numbers R2.5
relation: plants animals R2.6
relation: forgiveness resentment R1.2