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 producer who worked on Daylight Crossing is the oldest? Passage:Charley and Hattie collaborated with Jeff Trott (Sheryl Crow, Aimee Mann), Mike Elizondo (Dr. Dre, Fiona Apple), and Steve Booker (Duffy) on material that would become their album Daylight Crossing. Two years later they returned to the UK, where they worked with Universal Records sister company Mercury Records for the album's release. Daylight Crossing was produced by Steve Lipson and Youth, recorded at Sarm Hook End, Abbey Road and Olympic Studios. The album featured musicians Simon Tong and Simon Jones from the band The Verve and Steve Gadd and Pino Palladino. Daylight Crossing was released in June 2006 and became the 'Record of the Week' and 'Album of the Week' at BBC Radio 2, reaching No. 2 on UK's TV music video airplay chart. iTunes chose Daylight Crossing as 'Album of the Week' and singled out the song "Torches" as its 'Single of the Week' during its release week. The Webb Sisters performed on The Sharon Osbourne Show and toured in support of Jamie Cullum (for whom their brother Brad has played drums), Jason Mraz, James Morrison and Kubb, alongside band Leya and Joe Echo. Their song "Still The Only One" was played on the TV show Cane on CBS.

Example Output: b

Example Input: Question: Who were the crew members on the flight to the moon in 1972? Passage: are three views of Mare Tranquillitatis on the Moon, taken by the mapping camera of the Apollo 17 mission in 1972, facing south-southwest from an average altitude of 111km on Revolution 36 of the mission. At the left is the east side of Mare Tranquillitatis, with the craters Franz (bottom right), Lyell (dark floor, right of center), and Taruntius (upper left). The "bay" of dark mare (basalt) at left is Sinus Concordiae, with "islands" of older, light highland material. At the right is the crater Cauchy, which lies between the Rupes Cauchy and Cauchy rille. The center photo shows the central mare with craters Vitruvius (lower right) and Gardner (bottom center). At the horizon are lighter highlands at the southern margin of the mare, near the Apollo 11 landing site. The crater Jansen is visible at the edges of both the center and right photos. The right photo shows the western mare, with the craters Dawes (lower left) and the large Plinius (43km diameter), with the Plinius Rilles in the foreground. These photos were taken within minutes of each other as the command module America orbited the Moon. The Sun elevation drops from 46 degrees at left to 30 degrees at right.

Example Output: b

Example Input: Question: Which site was larger in area, Sannai-Maruyama Ruins or the Komakino Site? Passage:The area has been settled extensively since prehistoric times, and numerous Jomon period sites have been found by archaeologists, the most famous being the Sannai-Maruyama Ruins located just southwest of the city center dating to 5500-4000 BC, and the Komakino Site slightly farther south dating to around 4000 BC. The large scale of these settlements revolutionized theories on Jomon period civilization. During the Heian period, the area was part of the holdings of the Northern Fujiwara clan, but remained inhabited by the Emishi people well into the historic period. After the fall of the Northern Fujiwara in the Kamakura period, the territory was part of the domain assigned to the Nambu clan, and into the Sengoku period, it came under the control of the rival Tsugaru clan, whose main castle was located in Namioka. After the start of the Edo period, what would become the core of present-day Aomori was a minor port settlement in the Hirosaki Domain called . The town was rebuilt in 1626 under orders of the daimyo, Tsugaru Nobuhira and renamed "Aomori", but this name did not come into common use until after 1783; however, the historical accuracy of this claim is debated since there is no written material from the time to definitively connect Uto to Aomori. Some evidence even claims that Aomori and Uto co-existed in different parts the city in its current state. It wasn't until 1909 that a local scholar claimed that the village of Uto became Aomori.

Example Output:
a