Detailed Instructions: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.
Q: Question: How long had Mark Vaile held his post before resigning in 2008? Passage:The coalition total was reduced to 64 seats when Rob Oakeshott, former state Nationals turned independent MP, won the seat of Lyne at the September 2008 Lyne by-election, resulting from the resignation of former Howard minister and Nationals leader Mark Vaile. The April 2008 Gippsland by-election, resulting from the resignation of the former Howard minister and Nationals MP Peter McGauran, saw the Nationals' Darren Chester retain the seat, receiving a swing of 6%. The Liberals suffered a swing in the September 2008 Mayo by-election resulting from the resignation of former Howard minister and Liberal leader Alexander Downer, and came close to losing the seat to the Greens candidate. The Liberals retained seats at the Bradfield and Higgins by-elections in December 2009. The member for Ryan, Michael Johnson, was expelled from the Liberal National Party on 20 May 2010, reducing the Coalition to 63 seats.

A:
b