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: Who are the Gestapo? Passage:On 30 June 1943 he was arrested by the Gestapo in Warsaw and sent to Berlin. Rowecki was arrested due to his betrayal by Ludwik Kalkstein "Hanka", Eugeniusz Swierczewski "Genes" and Blanka Kaczorowska "Sroka" who were Gestapo agents. All of them were members of the Home Army but in fact collaborated with the Gestapo. Swierczewski, Kalkstein and Kaczorowska were sentenced to death for high treason by the Secret War Tribunal of the Polish Secret State. The sentence on Eugeniusz Swierczewski was carried out by troops commanded by Stefan Rys ("Jozef"). They hanged Swierczewski in the basement of the house at 74 Krochmalna Street in Warsaw. Kalkstein received protection from the Gestapo and was not harmed. He fought in a Waffen SS unit during the Warsaw Uprising of 1944 under the name of Konrad Stark. After the war, he worked for the Polish Radio station in Szczecin and was later recruited as an agent by the Urząd Bezpieczeństwa. In 1982, he emigrated to France; he died in 1994. Blanka Kaczorowska also survived the war. Her death sentence was not carried out because she was pregnant. After the war, she also worked as a secret agent for the Urząd Bezpieczeństwa and later for the renamed Służba Bezpieczeństwa. She emigrated to France in 1971. She died in 2002


Ex Output:
b


Ex Input:
Question: What country did Kubrat attend the University of Navarra in? Passage:After completing his primary and secondary education at the Lycée Français in Madrid, Kubrat studied between 1984 and 1990 at the University of Navarra in Pamplona, where he obtained a Licentiate in Medicine and Surgery. After his graduation, he worked for five years as a resident physician at Puerta de Hierro Clinic in Madrid, where he made his expertise as a general surgeon. Subsequently he worked for a year at the St Mark's Hospital and Northwick Park Hospital and further specialized as a surgeon in proctology. Kubrat worked between 1997 and 2003 as a colorectal surgeon at the Ruber International Clinic in Madrid and was in charge of the Ambulatory Surgery Unit. Since September 2003, he became Head of the Colorectal Unit at the San Camillo Hospital in Madrid, where he also acts as Director of the Team Care Management since June 2006. He was director of Shared Medical Systems between 1999 and 2000, and is currently also part of the advisory board of Tokuda Hospital (Sofia, Bulgaria) and a Consultant for Mensor Health Care, S.L in Madrid.


Ex Output:
b


Ex Input:
Question: Who is the head of the National Basketball Association? Passage:The 1993–94 NBA season was the Spurs' 18th season in the National Basketball Association, and 27th season as a franchise. It was also their first season at the Alamodome. During the offseason, the Spurs acquired All-Star forward Dennis Rodman from the Detroit Pistons, and signed free agent Sleepy Floyd. Rodman led the league with 17.6 rebounds per game as the Spurs went on an 8-game winning streak after a 4–5 start to the season. The team would then win 13 consecutive games between January and February, and finish second in the Midwest Division with a 55–27 record. David Robinson captured the scoring title leading the league with 29.8 points per game, and was selected for the 1994 NBA All-Star Game. However, in the first round of the playoffs, Rodman became a distraction as he scuffled with head coach John Lucas as the Spurs lost to the 5th-seeded Utah Jazz in four games. 


Ex Output:

b