question: criminals:commit a crime
choices.label: A B C D
choices.text: couple:married lawyers:debate president:visit staff:manage
explanation: "committing a crime" is a necessary condition for becoming a "criminal". only by "committing a crime" can there be a "criminal". "marriage" is a necessary condition for becoming a "husband and wife", and only by "marriage" can there be a "husband and wife". "debate" is not a requirement to be a "lawyer". "visit" is a form of work for the "president". an "staff" is "managed", and "being managed" is not a necessary condition for becoming an "staff".
relation: commit a crime criminals R5.4
relation: married couple R5.4
relation: visit president R3.10
relation: manage staff R4.2