Save the game, then try each answer in turn. It shouldn't take you more reloads than the number of letters in the "world".
I wasn't even able to get the first riddle. I figured it out but when Burne asked how I had arrived at my answer, the only reply I could give was that I had guessed. So, it was 'botched'. NF
Hmm, I have a choice of how to obtain the right answer in the conversation with Burne (after I choose the right answer first of course), maybe it has something to do with the character intelligence? My speaker has 16 int.