Definition: 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.
Input: Question: How old were Suda and Mikami when they collaborated on Killer7? Passage:The game's history can be traced back to 2005, when Goichi Suda and Shinji Mikami (creator of the Resident Evil series) became good friends while working together on Killer7. Suda wanted to make a survival horror game exclusively for the PlayStation 3. With his first horror title  receiving decent sales in Japan by 2006, Suda immediately began working on Kurayami (Japanese for 'Darkness') in his spare time. It was at one time thought to be called "Closer". However, EA later confirmed that name had been abandoned for another title. By the Electronic Entertainment Expo (E3) in 2006, a publisher for Kurayami had not yet been established. In 2008, Suda presented the game's concept to EA Games, who agreed to license the Unreal Engine 3 and to publish the game to a worldwide audience. Shinji Mikami was then invited to executive-produce the project. Suda wanted to announce the game at E3 2009, but was not allowed to do so, due to a media silence agreement between Grasshopper Manufacture and EA Games. That December, Akira Yamaoka (sound designer for the Silent Hill series) left Konami after finishing his work on  and joined Grasshopper Manufacture because he enjoyed the latter's game No More Heroes. Yamaoka began work as the sound designer for the game. The game went about five different versions until Electronics Arts approved it. The newly titled Shadows of the Damned was finally unveiled at the Tokyo Game Show in 2010 as an action game.

Output:
a