Definition: 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.
Input: Question: Which of the party leaders during the 2001 election had the longest political career? Passage:Elections to the Australian Capital Territory Legislative Assembly were held on Saturday, 20 October 2001. The incumbent Liberal Party, led by Gary Humphries, was challenged by the Labor Party, led by Jon Stanhope. Candidates were elected to fill three multi-member electorates using a single transferable vote method, known as the Hare-Clark system. The result was another hung parliament. However Labor, with the largest representation in the 17-member unicameral Assembly, formed Government with the support of the ACT Greens and Democrats. Stanhope was elected Chief Minister at the first sitting of the fifth Assembly on 12 November 2001. The election was conducted by the ACT Electoral Commission and was the first time in Australia's history that an electronic voting and counting system was used for some, but not all, polling places.


a