Q: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.
Question: Who was the leader of the British Conservative Party in 1991? Passage:Founded in 1991 as the pro-free market wing of the Civic Forum by Vaclav Klaus and modelled on the British Conservative Party, the ODS won the 1992 legislative election, and has remained in government for most of the Czech Republic's independence. In every legislative (except for the 2013 election) it emerged as one of the two strongest parties. Vaclav Klaus served as the first Prime Minister of the Czech Republic after the partition of Czechoslovakia, from 1993 to 1997. Mirek Topolanek, who succeeded him as leader of the party in December 2002, served as Prime Minister from 2006 to 2009. In the 2010 election, the party lost 28 seats, finishing second, but as the largest party right of the centre, it formed a centre-right government with Petr Necas as Prime Minister. In the 2013 legislative election, the party was marginalized by only securing 16 seats in the Chamber of Deputies, relegating the party to the opposition since July 2013. In the 2017 legislative election, it has partly recovered and secured 25 seats in the Chamber of Deputies, making it the second strongest party in chamber. The party is currently being led by Petr Fiala, who has been leader since the 2014 party convention.

A:
b