question: left-handed:right-handed
choices.label: A B C D
choices.text: black:white survivor:victim sunny:cloudy old people:children
explanation: "left-handed" and "right-handed" are completely complementary. colors include "black", "white", and other colors. "survivor" and "victim" are completely complementary. weather includes "sunny", "cloudy", and other weather. in addition to "old people" and "children", there are also middle-aged people.
relation: left-handed right-handed R2.5
relation: black white R2.6
relation: survivor victim R2.5
relation: sunny cloudy R2.6
relation: old people children R2.6