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.

Example 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.

Example Output: b

Example Input: Question: Who was drafted immediately before Bergevin the year he joined the Blackhawks? Passage:Bergevin was drafted by the NHL's Chicago Blackhawks in the 1983 NHL Entry Draft, third round, 59th overall. After a junior career with the Chicoutimi Saguenéens of the Quebec Major Junior Hockey League (QMJHL), he made the Black Hawks in 1984 and played with Chicago for the next five seasons before being traded to the New York Islanders. His career with the Islanders was brief, and he spent much of that time with their American Hockey League (AHL) affiliate Springfield Indians, whom he helped lead to consecutive Calder Cup championships in 1990 and 1991. In the 1991 season he was traded to the Hartford Whalers and became a fan favorite for his skilled checking. The 1991–92 was his best season statistically, scoring 7 goals and 17 assists for 24 points.

Example Output: a

Example Input: Question: What state did the battle where Hotaling commanded companies A & B take place in? Passage:Union General Grant made frequent use of both companies in battle, considering them very mobile and efficient. Hotaling's skill later caught the eye of Union General Edward Ord, who appointed Hotaling and his men as his personal escort group. Hotaling commanded both companies A & B at the Battle of Fort Donelson. Hotaling and Capt. Larison commanded 126 men in the Battle of Shiloh. On November 19, 1863, Hotaling was promoted to the rank of major. After Ord was wounded, Hotaling and his men served as escort to Union General John A. Logan, who later appointed Hotaling as his personal chief of staff. In the summer of 1864, Major Hotaling served under Logan in the ranks of the XV Corps in the Battle of Atlanta. As a part of the Atlanta force, Hotaling may have taken part in Sherman's march to the sea; though, since General Logan had temporarily passed command of the XVth to General Oliver Otis Howard after Atlanta, it is not certain. Major Hotaling did serve under General Logan once more in the Carolinas Campaign.

Example Output:
b