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: When was the person born whom Stevens supported for president? Passage:Stevens was a firm supporter of former brigadier general Franklin Pierce's candidacy for President of the United States in 1852, as both men had served in the Mexican–American War. Stevens was rewarded by President Pierce on March 17, 1853 by being named governor of the newly created Washington Territory. (The position also included the title of Superintendent of Indian Affairs for that region). Stevens chose to add one more duty as he traveled west to the territory he would govern: the government was calling for a surveyor to map an appropriate railroad route across the northern United States, hoping that a transatlantic railroad would open up Asian markets. With Stevens' engineering experience (and likely the favor of Pierce yet again, as well as Secretary of War Jefferson Davis), he won the bid. His party, which included Dr. George Suckley, John Mullan and Fred Burr, son of David H. Burr, spent most of 1853 moving slowly across the prairie, surveying the way to Washington Territory. There Stevens met George McClellan's party, which had surveyed the line between the Puget Sound and the Spokane River. He took up his post at Olympia as governor in November that year.


b