Intro to the Reference Interview

In 703 (basic reference) we studied search strategies first. Then moved to the reference interview. The students were all revved and ready. My first question to the students was: If a patron came to the desk and asked you "Who was Napoleon's father?" what source would you go to? Only once did a student respond in a useful way. How would you respond to me? (Veterans of 703, do you remember the correct response?)