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: Consider Input: Question: When was the Great Fire of London?
 Passage:Bermondsey was historically a rural parish on the outskirts of London until the 17th century when the area began to be developed as a wealthy suburb following the Great Fire of London. By the 19th century, the once affluent parts of Bermondsey had experienced a serious decline, and became the site of notorious slums with the arrival of industrialisation, docks and migrant housing, especially along the riverside. The most notorious of the slums was known as Jacob's Island, with the boundary approximately the confluence of the Thames and subterranean River Neckinger, at St Saviour's Dock across from Shad Thames, to the west, a tidal ditch just west of George Row to the east, and another tidal ditch just north of London Street (now Wolseley Street) to the south. It was a particularly squalid rookery, and described as "The very capital of cholera" and "The Venice of drains" by The Morning Chronicle in 1849.


Output: b


Input: Consider Input: Question: Who were the other members of the band that Patrick and Bill both left? Passage:Flags is a 1985 album by the duo Moraz-Bruford. Unlike their prior effort Music for Piano and Drums, which featured only an acoustic drum kit and grand piano, this recording expanded their musical palette by including a Kurzweil 250 synthesizer and electronic percussion. Keyboardist Patrick Moraz and drummer Bill Bruford had both previously been members of the progressive rock band Yes (though at different points in time) and also appeared together on Chris Squire's first solo album Fish Out of Water. During the recording of this album, Moraz was a member of The Moody Blues, while Bruford's band King Crimson had just begun a hiatus that would last for ten years. Flags features ten instrumental works, including a drum solo based on Max Roach's "The Drum Also Waltzes".


Output: b


Input: Consider Input: Question: Does Manche or Marigny have a higher population? Passage:In total, around four hundred dummies were planned to be dropped as part of the operation. Titanic I simulated the drop of an airborne division north of the Seine river; near Yvetot, Yerville, Doudeville in the Seine-Maritime region and Fauville in the Eure region. Two hundred dummies and two SAS teams were parachuted in across these four Titanic I targets. Titanic II would have involved dropping fifty dummies east of the Dives River to draw German reserves onto that side of the river. However, this segment of the operation was cancelled just before 6 June. A further fifty dummies were dropped, under Titanic III, in the Calvados region near Maltot and the woods to the north of Baron-sur-Odon to draw German reserves away to the west of Caen. Finally, Titanic IV involved two hundred dummies dropped near Marigny in the Manche, as with Titanic I the intention was to simulate the dropping of an airborne division. Two SAS teams were also dropped near Saint-Lô. This group commanded by Captain Fowles and Lieutenant Poole landed at 00:20 on 6 June 1944, 10 minutes ahead of schedule. To deceive the Germans into thinking there was a large parachute landing in progress, the SAS teams played 30 minute pre-recorded sounds of men shouting and weapons fire including mortars.



Output: a