We chatted nicely about the state of .... um .... affairs and remembered that this lunch , simple as it is at Burger King , is one of the high points of the year for both of us . Once back at the hotel , I wandered around some more . During the convention , I guess , I do n't have much to do and I 'd never noticed that before . This time it was obvious .

Question: How often do we seem go to the convention and have a chat over lunch ?
Answer: We seem to do it biennially .We seem to do it every year .We seem to do it monthly .We seem to do it a few times a year .