Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Question: How many members did the Liberal party have when MacDonald failed to get their endorsement during the 1949 election? Passage:MacDonald was involved in raising funds for the Nationalist Party from 1925 and by 1930 was its general secretary in Western Australia. He was elected to the Senate at the 1934 election, representing the United Australia Party, although he took his seat early in March 1935, filling a casual vacancy. He was minister without portfolio assisting the Minister for Commerce from November 1937 to November 1938 and then assisting the Treasurer until April 1939. Due to his support for Billy Hughes for the leadership after the death of Joseph Lyons, MacDonald was left out of Robert Menzies' ministries. He lost his seat at the September 1946 election, with his term finishing in June 1947. He failed to get Liberal Party endorsement for the December 1949 election.

Student:
a