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.

Ex Input:
Question: Has the maple leaf been used on any other coat of arms or country flags besides in Canada? Passage:The maple leaf has been used as a Canadian emblem since the 18th century. It was first used as a national symbol in 1868 when it appeared on the coat of arms of both Ontario and Quebec. In 1867, Alexander Muir composed the patriotic song "The Maple Leaf Forever", which became an unofficial anthem in English-speaking Canada. The maple leaf was later added to the Canadian coat of arms in 1921. From 1876 until 1901, the leaf appeared on all Canadian coins and remained on the penny after 1901. The use of the maple leaf by the Royal Canadian Regiment as a regimental symbol extended back to 1860. During the First World War and Second World War, badges of the Canadian Forces were often based on a maple leaf design. The maple leaf would eventually adorn the tombstones of Canadian military graves.


Ex Output:
b


Ex Input:
Question: How old was Harrison when he won the Presidency? Passage:Beginning with the 2000 election, the status of the Missouri bellwether came into question. Between 1904 and 2004, Missouri was carried by the victor of each presidential election, with the exception of 1956. Though Bush won the presidency in the 2000 election through the Electoral College, he lost the national popular vote. The 2000 election was unique because this was the first time in over a century where the popular vote winner lost the general election. (In 1888, Missouri voted for Grover Cleveland, the incumbent Democrat, who lost to Republican candidate Benjamin Harrison). Thus, controversy exists as to whether or not Missouri accurately predicted victor in this election. In the subsequent election, Missouri voted for George W. Bush, who this time won both the popular vote and the Electoral College. Missouri has voted reliably Republican since 2000. The state voted for John McCain in 2008, and for Mitt Romney in 2012, both of whom lost the general election to Barack Obama. The controversy is further complicated by the 2016 presidential election, where Missouri voted for Donald Trump by a landslide, while Hillary Clinton won the popular vote by nearly three million votes, but like in 2000, Trump won the Electoral College and became 45th President of the United States. Like 2000, political scientists have differing opinions on whether or not Missouri accurately predicted the victor, and even if Missouri is still a bellwether state at all.


Ex Output:
b


Ex Input:
Question: What year was Herz' teacher born? Passage:Born in Berlin to very poor parents, Herz was destined for a mercantile career, and in 1762 went to Königsberg, East Prussia. He soon gave up his position as clerk and attended the University of Königsberg, becoming a pupil of Immanuel Kant, but was obliged to discontinue his studies for want of means. He thereupon became secretary to the wealthy Russian Ephraim, traveling with him through the Baltic Provinces. On August 21, 1770, he traveled from Berlin and acted as respondent when Kant presented his Inaugural dissertation at the University of Königsberg for the post of ordinary professor. In 1770 he had returned to Germany and studied medicine in Halle, where he became an MD in 1774, in which year he established himself in Berlin, being appointed physician at the Jewish hospital. Beginning in 1777, he delivered public lectures on medicine and philosophy, which were well attended by the students and the principal personages of the Prussian capital. At some of them even members of the royal family were present.


Ex Output:

b