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: Did the USS Stribling visit Hawaii before making her way to Japan? Passage:On 30 January 1969, Stribling put to sea from Mayport, Florida, to make her second voyage to the Far East. Heading via the Panama Canal, San Diego, and Pearl Harbor, the destroyer made for Yokosuka, Japan, and then operations off the coast of Vietnam. Stribling participated in "Sea Dragon" and "Market Time" operations, and her duties also included bombardments on the gunline, search and rescue missions usually for downed carrier pilots, and Positive Identification Radar Advisory Zone (PIRAZ) duty. The latter assignment involved riding "shotgun" for larger PIRAZ ships armed with more sophisticated radar and target designation systems. That summer, Stribling plane-guarded for the carriers operating on "Yankee Station" in the Gulf of Tonkin. When not operating in the combat zone, she put into Kaohsiung, Taiwan; Hong Kong; and Subic Bay in the Philippines for repairs after a collision with a barge being towed by RVN tug during a nighttime underway replenishment . On 2 August 1969, Stribling cleared the combat zone to return home. On her way, she stopped at Kure and Yokosuka, Japan; Pearl Harbor; San Diego; Acapulco Mexico, and Panama. On 17 September 1969, she reentered Mayport.

Ex Output:
b

Ex Input:
Question: On what date was the person who sent an emissary rather than attend the 1931 meeting with Luciano and three others in person born? Passage:In April 1931, Salvatore Maranzano, head of the Castellammarese clan in New York City, declared himself capo di tutti capo (boss of all bosses). Lucky Luciano, who opposed Maranzano's claim to control the Luciano crime family, decided to have Maranzano murdered. On April 21, 1931, he met in Cleveland with Frank Milano, Moe Dalitz, Meyer Lansky, Santo Trafficante Sr., and an emissary sent by Al Capone. The five agreed with Luciano's plan to kill Maranzano and establish a new federation of crime families to handle disputes. After the September 10, 1931, assassination of Maranzano, the title of capo di tutti capo was retired and "The Commission" established by the American Mafia. Milano was named a member of The Commission, alongside Joseph Bonanno, Al Capone, Tommy Gagliano, Lucky Luciano, Vincent Mangano, and Joe Profaci.

Ex Output:
b

Ex Input:
Question: Who was older, Predic's professor or his contemporary? Passage:He was born in Orlovat, and attended primary school in Crepaja. After finishing his gymnasium in Pancevo (this school was later named after him), he went to Vienna to study on academy in 1876. He graduated from the Academy of Fine Arts of Vienna in 1880. He studied in the class of professor Christian Griepenkerl, who also taught Predic's contemporary Paja Jovanovic. During his studies, he received the Gundel's prize for a male model painting in oil. In 1882, he worked in private studio of professor Grieppenkerl, and in the period from 1883 to 1885 he was an assistant professor of the Department of Antiquity at the Art academy in Vienna. During that time, under the instruction of professor Grieppenkerl, and the renowned architect Theophil Freiherr von Hansen, he painted 13 wall paintings of ancient, historical and mythological compositions for the frieze in the House of Lords at Reichsratsgebaude (Imperial Council Building) in Vienna.

Ex Output:
b