instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Cinder Cone, composite, and shield are all types of what?
answer:
cinder cone


question:
In which city will the 2014 Tour de France begin?
answer:
2014 tour de france


question:
Dilma Rousseff has been under a political cloud recently after allegations of finance tampering have led to a clamour for her impeachment, at the time of writing (20/4) of which country is she president?
answer:

dilma rousseff