instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which alliteratively-named politician served as Abraham Lincoln's Vice-President between 1861 and 1865?
answer:
abraham lincoln


question:
Who had hits with Stepping Out and Different For Girls?
answer:
different for girls


question:
In 2010, who became the first person to win the Women's Singles title at the Australian Open tennis tournament 5 times?
answer:

australian open