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: Which city is the largest - the city near junction K, or the city near junction A? Passage:Belgrade marshalling yard () or Makis railway station (), or Makis freight station, is a classification yard of the Belgrade railway junction and the largest railway station in Serbia. It is located in the neighbourhood of Makis in Cukarica of Belgrade. The railroad continues to Ostruznica in one line via park A, in the other direction to Ostruznica via park B, in third direction to Resnik via junction B near Zeleznik and junction K of Belgrade railway junction near Petlovo Brdo, in fourth direction to Resnik via junction R in the tunnel below Vidikovac and junction A near Knezevac, in the fifth direction to Rakovica via park B and junction R, in the sixth direction to Rakovica via park A and junction T, in the seventh direction to Rakovica via park B and junction T per second line and the eight towards direction to Jajinci. Belgrade marshalling yard consists of 120 railway tracks.

Ex Output:
a

Ex Input:
Question: Was Hirohito an adult when the San Francisco Peace Treaty was signed? Passage:The Allied occupation of Japan at the end of World War II was led by General Douglas MacArthur, the Supreme Commander of the Allied Powers, with support from the British Commonwealth. Unlike in the occupation of Germany, the Soviet Union was allowed little to no influence over Japan. This foreign presence marks the only time in Japan's history that it has been occupied by a foreign power. At MacArthur's insistence, Emperor Hirohito remained on the imperial throne. The wartime cabinet was replaced with a cabinet acceptable to the Allies and committed to implementing the terms of the Potsdam Declaration, which among other things called for the country to become a parliamentary democracy. Under MacArthur's guidance, the Japanese government introduced sweeping social reforms and implemented economic reforms that recalled American "New Deal" priorities of the 1930s under President Roosevelt. The Japanese constitution was comprehensively overhauled and the Emperor's theoretically-vast powers, which for many centuries had been constrained by conventions that had evolved over time, became strictly limited by law. The occupation, codenamed Operation Blacklist, was ended by the San Francisco Peace Treaty, signed on September 8, 1951, and effective from April 28, 1952, after which Japan's sovereigntywith the exception, until 1972, of the Ryukyu Islands was fully restored.

Ex Output:
b

Ex Input:
Question: Was the president of the two organizations the same? Passage:Elma Muros-Posadas (born January 14, 1967 in Magdiwang, Romblon) also known as the "Long Jump Queen" of the Philippines and a heptathlon champion, is a former member of the Philippine Track and Field National Team and now a legend in Philippine track and field history who specialized in long jump. She also competed in the heptathlon, 100m and 400m hurdles, 100m, 200m, and 400m sprint alongside the "Sprint Queen" of the Philippines and also fellow legend, Lydia de Vega. Elma is one of the foremost track and field athletes produced by the Philippines under the Marcos Regime's National Sports Program, Gintong Alay, that was launched in 1979, but was eventually disbanded in 1986 due to the People Power Revolution and the ousting of Ferdinand Marcos. Later on Gintong Alay was disbanded and became the Philippine Sports Commission (PSC) which was established in 1990.

Ex Output:
a