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: How many churches did Bernardino's teacher paint for? Passage:He was born in Mortara near Pavia. He trained as a pupil of the painter Gaudenzio Ferrari. In Milan, he painted a Last Supper for the church San Nazaro Grande. He painted a Holy family for the church of Sant'Ambrogio, now on display in the Brera Gallery. He painted frescoes on the Life of the Magdalen for the church of San Cristoforo in Vercelli. Three of his works are on display at the Museo Borgogna in Vercelli, including: an Annunciation; a Madonna and Child with Saints Bernardino of Siena and St Francis of Assisi (also labeled Madonna del cane due to dog asleep below Virgin); and a painted standard of Madonna and Child with St Anne and hooded confraternity brothers, painted for the Confraternita di Sant’Anna. Lanini painted a St Catherine for the church San Celso. He frescoed sibyls for the Novara Cathedral. He also painted for a chapel in the Basilica of San Magno, Legnano. Other paintings are in Saronno.

Example Output: a

Example 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

Example Output: b

Example Input: Question: Who was the coach of VfL Osnabruck? Passage:After a poor start, they ended the 2011–12 season in 13th place. They also won the Westphalia Cup in a final against arch rival SC Preußen Münster. By reaching the final, they also qualified for the 2012–13 DFB-Pokal, where they beat SC Paderborn 07, a team playing in the 2. Bundesliga, but lost in the second round in a close match against Bayer 04 Leverkusen, a Europa League participant. On 11 May 2013, Bielefeld beat VfL Osnabrück 1–0 to guarantee a top two finish and promotion back to the 2. Bundesliga for the 2013–14 season. That season began quite hopeful: Arminia qualified for the second round of the DFB-Pokal again and at the 8th matchday they had even climbed up to the 3rd rank in the league table. But after a disastrous autumn and a mediocre winter Arminia fell down onto the 17th rank and the popular coach Stefan Krämer had to leave. His successor Norbert Meier at first had only little more success: Arminia finished 16th in the 2. Bundesliga, and lost a playoff against SV Darmstadt 98 on away goals after a 122nd minute (extra time) goal gave Darmstadt the victory. Arminia had to go back into the 3. Liga.

Example Output:
a