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: At what age did Jared Harris join Allied? Passage:On February 6, 2015, Paramount Pictures and New Regency announced that Robert Zemeckis was to direct an untitled World War II romantic thriller, in which Brad Pitt would star. Steven Knight wrote the original script, in development by Graham King's GK Films, which now would be produced by ImageMovers' Zemeckis and Steve Starkey along with King. On June 8, 2015, Marion Cotillard was cast to play a spy along with Pitt, who fall in love during a mission to kill a German official. In August 2015, Knight said that the film would be based on a true story told to him at the age of 21, and also that the shooting would start in January 2016. On January 28, 2016, Jared Harris joined the film. On March 8, 2016, Lizzy Caplan was cast to play Pitt's sister. Executive producers on the film would be Knight, Jack Rapke, Patrick McCormick and Denis O'Sullivan. Alan Silvestri composed the music.

Ex Output:
b

Ex Input:
Question: Which country did Innocent Oula return to after Somalia? Passage:Innocent Oula joined the National Resistance Army in 1986 at the rank of captain. He rose through the ranks and has served as a member of UPDF delegation during the ill-fated Juba Peace Talks, at the rank of lieutenant colonel. At the level of colonel, in 2009, he served at the director of training for the UPDF 2nd Division, based at Mbarara, in Western Uganda. From 2010 until 2011, he served as the Chief of Staff of AMISOM, based in Mogadishu, Somalia. On his return from Somalia, he was posted to the 4th UPDF Division headquarters in Gulu, as the commanding officer. He later was appointed chief of personnel and administration in the UPDF, based at the Mbuya Barracks. In January 2014, he was elected to the Parliament of Uganda, as a UPDF representative. In November 2014, he was promoted to the rank of brigadier, along with more than 1,300 UPDF officers who received promotions at the same time.

Ex Output:
b

Ex Input:
Question: What year was the tech company that made the products used by U2 on their concerts found? Passage:The concerts were digitally recorded by 28 HD cameras, both human operated and robotic, collecting about 500 gigabytes of audio/video per hourroughly a terabyte (TB) per show. To handle their data storage needs, U2 used several products from EMC Corporation, the first time the company had a musical client. To archive uncompressed footage and access it on-demand during the shows' production, the tour staff used an EMC VNXe3200 portable flash storage unit worth about US$25,000. It was configured with 22.9 TB of storage but was expandable up to 450 TB. After each show, tour staff used an EMC Data Domain 2500 system to back up footage. With storage up to 6.6 petabytes and an hourly throughput of 13.4 TB, the Data Domain system could complete a nightly backup before the crew disassembled the stage. On previous tours, U2 relied on USB flash drives for storage. Video imagery was loaded onto the set's video screens with two d3 Technologies d3 44 media servers. Due to the need to load video on the fly, all storage was locally networked, as a cloud storage configuration would have increased latency. EMC's solution satisfied certain requirements dictated by the band, such as: mobility through a flight case form factor; expandable storage; and the capability to handle the large data loads from many cameras.

Ex Output:
b