question: item:buy:store
choices.label: A B C D
choices.text: online shopping:payment:internet reading:learning:library letter:mail:post office stocks:investments:accounts
explanation: "items" are "purchased" in the "store", and "items" can be "purchased". "payment" is part of "online shopping". "reading" is a kind of "learning". "letters" are "mailed" to "post office", and "letters" can be "mailed". "stocks" are "invested", "accounts" are not venues.
relation: buy item R4.2
relation: online shopping payment R2.3
relation: reading learning R2.2
relation: mail letter R4.2
relation: investments stocks R4.2