question: legal:illegal
choices.label: A B C D
choices.text: for:against agriculture:industry professor:party member paid:unpaid
explanation: "legal" and "illegal" contradict each other. both "for" and "against" refer to attitudes, and in addition to "for" and "against", there is neutrality. both "agriculture" and "industry" are industries. in addition to "agriculture" and "industry", there is the service industry in the tertiary industry. a "professor" can be a "party member", and a "party member" can be a "professor". the two are not contradictory. "paid" and "unpaid" contradict each other.
relation: legal illegal R2.5
relation: for against R2.4
relation: for against R2.6
relation: agriculture industry R2.4
relation: agriculture industry R2.6
relation: professor party member R2.7
relation: paid unpaid R2.5