question: up:down
choices.label: A B C D
choices.text: country road:highway yali pear:snow pear happiness:sadness common year:leap year
explanation: "up" and "down" have opposite meanings. "country road" and "highway" are two types of roads. "yali pear" and "snow pear" belong to two types of pears. their relationship is different from that of the query. "happiness" and "sadness" have opposite meanings. according to the number of days in a year, we divide years into "common years" and "leap years".
relation: up down R1.2
relation: yali pear snow pear R2.6
relation: happiness sadness R1.2