instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which model was married to photographer David Bailey for 10 years, from 1975?
answer:
david bailey


question:
Besides the Caucasus, what mountain range forms the border of Europe and Asia?
answer:
asia


question:
Standard, Miniature and Toy are all breeds of which dog?
answer:

dog