question: delivery:receipt
choices.label: A B C D
choices.text: shopping:entertainment purchase:donate borrow:organize teach:learn
explanation: "delivery" refers to the delivery of official documents, letters, etc. after the "delivery" side "delivers", the "receiver" side "receives". these two things happen in time order and their subjects are different. "shopping" can be used as a form of "entertainment". there is no necessary sequence for the two, and their subjects are the same. "purchase" and "donate" do not necessarily happen in order. there is no necessary sequence between "borrowing" and "organizing". after the teacher "teaches", the students "learn". the two belong to the time-dependent correspondence, and the subjects are different.
relation: delivery receipt R5.2
relation: shopping entertainment R3.10
relation: teach learn R5.2