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 states aided the Latin Empire under the benner "Crusader States"? Passage:The Nicaean–Latin wars were a series of wars between the Latin Empire and the Empire of Nicaea, starting with the dissolution of the Byzantine Empire by the Fourth Crusade in 1204. The Latin Empire was aided by other Crusader states established on Byzantine territory after the Fourth Crusade, as well as the Republic of Venice, while the Empire of Nicaea was assisted occasionally by the Second Bulgarian Empire, and sought the aid of Venice's rival, the Republic of Genoa. The conflict also involved the Greek state of Epirus, which also claimed the Byzantine inheritance and opposed Nicaean hegemony. The Nicaean reconquest of Constantinople in 1261 AD and the restoration of the Byzantine Empire under the Palaiologos dynasty did not end the conflict, as the Byzantines launched on and off efforts to reconquer southern Greece (the Principality of Achaea and the Duchy of Athens) and the Aegean islands until the 15th century, while the Latin powers, led by the Angevin Kingdom of Naples, tried to restore the Latin Empire and launched attacks on the Byzantine Empire.


Ex Output:
b


Ex Input:
Question: When was the house that was later converted into a public library built? Passage:The George S. Houston Historic District is a historic district in Athens, Alabama. The district lies to the west and north of the public square, and features homes of some of the town's most prominent residents. Development began in the district soon after the town was founded in 1818; there are five homes remaining from the antebellum period. The district saw moderate growth between the Civil War and the early 1900s, most of which are Queen Anne and Victorian styles. The majority of houses in the district were constructed between 1908 and 1939. As the need for housing in the town grew, larger antebellum lots were subdivided and new construction was added. Larger houses tended to be American Foursquares, while middle-class houses were bungalows and cottages, some with Tudor Revival and Colonial Revival details. The district is entirely residential, with the exception of the First Methodist Church, built in 1925 in Neoclassical style; 400 North Jefferson was built in 1935 as a hospital, but later converted to apartments. Other notable properties in the district include the George S. Houston House, which was converted into a public library. The district was listed on the National Register of Historic Places in 1989.


Ex Output:
b


Ex Input:
Question: Which of the performers at the 1962 World's Fair was the oldest? Passage:When Seattle decided to try to put itself on the map with the futuristic Century 21 Exposition — the 1962 World's Fair — high culture was on the agenda, as well as popular entertainment along the lines of "Gracie Hansen's Paradise International" and "Les Poupees de Paris," an adult-themed puppet show, both of which aspired more to a Gay Nineties naughtiness than to anything artistic. The Opera House on the grounds of the center was rebuilt for the occasion (and would be rebuilt again 2001–2003 as McCaw Hall); performers at the fair included Igor Stravinsky, Benny Goodman, and Victor Borge; the Seattle Symphony brought in opera singers and staged Aida. The Fine Arts Pavilion (later the Exhibition Hall) managed to bring in works by Titian, Van Dyck, and Monet, as well as more contemporary pieces by Jackson Pollock, Georgia O'Keeffe, and Alexander Calder and by Pacific Northwest artists Tobey, Callahan, and Graves. There was also a significant exhibition of Asian art and Northwest Coast Indian art. The exposition also commissioned a massive abstract mural by Horiuchi, which still forms the backdrop to the stage at Seattle Center's Mural Amphitheater.


Ex Output:

b