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: Who is in charge of the city Couceiro arrived in in 1889? Passage:Paiva Couceiro arrived in Luanda, Angola on September 1, 1889, and was immediately appointed commander of the Irregular Cavalry Squadron in the village of Humpata (which was originally created by Artur de Paiva to combat bands of guerrillas along the plain of Moçâmedes). He did not remain at this outpost for long; apparently he was unsatisfied with his subordinates, their methods and inferior level of discipline, but was able to utilize them in a campaign to retrieve missing cattle, instead of hiring local Boer mercenaries, which had been the custom. By January he was in the village of Belmonte, in Bié, on a mission that would take him along the Cuando River, to Cuito and then to the Lialui along the Zambezi River (a trek of thousands of kilometers across savannah), in order to negotiate with Lewanika, chief of the Barotze tribe. The growth of the Portuguese occupation force in the Angolan interior was part of the administration's attempted to implement their Pink Map to explore and expand their serfdom over the peoples of the central-African interior. After some resistance, the colonial administration began a military campaign to pacify groups that had resisted initial token gestures of friendship and gifts, a process that Paiva Couceiro participated in energetically. For the chief's recognition of Portuguese sovereignty over his territories, Paiva Couceiro brought with him a colonels tunic and sword, textiles, gold, velvet, boxes of Porto wine and arms, which were to be delivered in 300 crates when the Governor of Angola canceled the project.

Example Output: a

Example Input: Question: When was the network which aired  the third season of Keylight Productions' youth crime drama series founded?  Passage:Walia began her career with television commercials. Thereafter Walia played in Life OK television's drama series Main Lakshmi Tere Aangan Ki, in it she played the role of Jiyana. Later, Walia was cast in Life OK's another drama series Ringa Ringa Roses, she played the daughter of Samir Soni's character. In 2014, Walia played the female lead in Bharat Ka Veer Putra – Maharana Pratap, in which she played the role of young Maharani Ajabde Punwar, the first wife of Maharana Pratap. She received Favourate Child Artist — Female at the 2015 Lions Gold Awards. She was nominated for the Best Child Actor - Female in 13th Indian Telly Awards 2014. In December 2014, Walia featured in the third season of Keylight Productions' youth crime drama series . The show aired on Channel V India, in which she played the role of Aarohi. Walia portrayed the lead character in Zee television's Yeh Vaada Raha, where she was played the role of Survi, She is playing the lead role of "Tara Mane" in  Tara From Satara on Sony TV as of August 2019.

Example Output: a

Example Input: Question: Which of the two men who met in 1976 over charges made against the church was older at the time? Passage:In 1976 church president Neil Albert Salonen met with Senator Bob Dole to defend the Unification Church against charges made by its critics, including parents of some members. In 1977, church member Jonathan Wells, who later became well known as the author of the popular Intelligent Design book Icons of Evolution, defended Unification Church theology against what he said were unfair criticisms by the National Council of Churches. That same year Frederick Sontag, a professor of philosophy at Pomona College and a minister in the United Church of Christ, published Sun Myung Moon and the Unification Church which gave an overview of the church and urged Christians to take it more seriously. In an interview with UPI Sontag compared the Unification Church with The Church of Jesus Christ of Latter-day Saints and said that he expected its practices to conform more to mainstream American society as its members become more mature. He added that he did not want to be considered an apologist for the church but a close look at its theology is important: "They raise some incredibly interesting issues."

Example Output:
b