user: 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: Which of Shapovalov's opponents at Gatineau and Drummondville was younger? Passage:In March in Gatineau, Shapovalov captured his fourth ITF Futures singles title after defeating Gleb Sakharov in straight sets. Two weeks later, he won his first ATP Challenger title with a victory over Ruben Bemelmans at the 75K in Drummondville, and was the youngest Canadian to win a Challenger until Félix Auger-Aliassime's victory at the Open Sopra Steria de Lyon later in the year. The next week, he was defeated by Mirza Bašić in the final of the ATP Challenger 50K in Guadalajara, stopping his winning streak at 17 matches. At the French Open in May, his first professional Grand Slam, he was defeated in the first round of qualifying by the first seed Marius Copil in three sets. In June, Shapovalov qualified for the ATP 500 at the Queen's Club Championships, his fourth ATP main draw but his first as a qualifier. In the first round, he defeated his second top 50 player, world No. 47 Kyle Edmund, before losing to world No. 14 Tomáš Berdych. At Wimbledon in July, Shapovalov was awarded a wild card for the main draw. He was defeated by Jerzy Janowicz in the opening round. At the end of the month, he won his second ATP Challenger title, defeating compatriot Peter Polansky in the final of the 75K in Gatineau.

Example Output: b

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: Where is the person from who Britney Spears was thinking about imitating? Passage:Before recording her debut album, Spears had originally envisioned it in the style of "Sheryl Crow music, but younger [and] more adult contemporary". However, the singer agreed with her label's appointment of producers, who had the objective to reach a teen public at the time. She flew to Cheiron Studios in Stockholm, Sweden, where half of the album was recorded the spring of 1998, with producers Max Martin, Denniz Pop and Rami Yacoub, among others. "Sometimes" was written by Jörgen Elofsson, and produced by Per Magnusson and David Kreuger. Spears recorded the vocals for the song in May 1998, at Cheiron Studios in Stockholm, Sweden. It was also mixed at Cheiron Studios by Martin. Esbjörn Öhrwall played the acoustic guitar, while bass guitar was done by Thomas Lindberg. Keyboards and programming was done by Kreuger, and additional keyboards by Magnusson. Background vocals were provided by Anders von Hoffsten. Spears also co-wrote and recorded a track called "I'm So Curious", produced by Eric Foster White, that was released as a B-side to "Sometimes". The track was recorded in 1997 at 4MW East Studios in New Jersey. "Sometimes" was released as the second single from ...Baby One More Time on April 30, 1999.

Example Output:

assistant: b