Instructions: 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: How many people were attending the University of Strasbourg the  year that Minyi received his doctorate from there? Passage:In November 1911, after the start of the Xinhai Revolution, he returned to Shanghai, where he became local leader of the Tongmenghui movement in the city. However, he disagreed with Song Jiaoren over the establishment of the Kuomintang, and left China for Belgium, where he earned degrees in medicine and pharmacology at the Free University of Brussels, but he never went into medical practice. He returned briefly to China in 1915 to oppose Yuan Shikai’s attempt to establish a new Chinese Empire, but soon returned to Europe. In 1921, he became the Vice President of the Institut Franco-Chinois which Li Shizeng had founded at the University of Lyons and held the post for a year. In 1922 he moved to Strasbourg, and received his doctorate from the University of Strasbourg in 1925.

Output:
a