Some lore for you. Discovered that each time you use the 'survey' command, you'll be asked just one question. But, you can use the 'survey' command as often as you feel like answering questions. I don't know how many questions are available to answer, but I did about fifteen before deciding that was enough for one encounter. So, you don't have to stop at one.
While the Surveyor paid me ten Dinars for each question, I also found that I was awarded Experience for each answer. Seems to be an undocumented feature. Cool!