In this task, you are given a question and an answer. Answer "Yes" if the given answer correctly answers the question, otherwise answer "No".

Ex Input:
who is the mayor of chicago 2011, Answer: Rahm Emanuel won the race for mayor with more than 55% of the vote.

Ex Output:
Yes

Ex Input:
where did the persian war take place, Answer: Seeking to secure his empire from further revolts and from the interference of the mainland Greeks, Darius embarked on a scheme to conquer Greece and to punish Athens and Eretria for burning Sardis.

Ex Output:
Yes

Ex Input:
what is a book index, Answer: An index (plural: indexes) is a list of words or phrases ('headings') and associated pointers ('locators') to where useful material relating to that heading can be found in a document.

Ex Output:
Yes