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: Which city had a greater population the year Gordon led his regiment to the Battle of Marks' Mills, Little Rock or Camden? Passage:In March and April 1864, Shelby's men harassed and skirmished with the Union Army force under the command of Major General Frederick Steele during his Camden Expedition, part of the Red River Campaign. Gordon led more than one charge against the Union forces during Steele's march from Little Rock to Camden, Arkansas. On April 25, 1864, Gordon led his regiment at the Battle of Marks' Mills where they captured two Union artillery pieces from the detachment of Union Lieutenant Colonel Francis M. Drake when Shelby's force attacked the Union left wing of the detachment which had been sent from Camden toward Pine Bluff, Arkansas to obtained supplies for Steele's force which was increasingly besieged by gathering Confederate forces at Camden. The Confederates outnumbered the Union force at Marks' Mills by more than 2 to 1 and overwhelmed it, taking about 1,300 prisoners and about 240 wagons. The overall commander of the Confederate cavalry force at Marks' Mills, Brigadier General James Fagan, led the Confederates, including Shelby's command, toward Pine Bluff in an effort to capture the Union supply depot. The Confederates did not make it to Pine Bluff due to flooding. They also did not return fast enough to cut off Steele's return march to Little Rock or to participate in the Battle of Jenkins' Ferry, the one big engagement during the retreat before the Union troops escaped across the swollen Saline River.

Ex Output:
a

Ex Input:
Question: How many years did the war last that Eden's great-grandfather commanded the 2nd regiment of foot? Passage:Eden's great-grandfather was William Iremonger, who commanded the 2nd Regiment of Foot during the Peninsular War and fought under Wellington (as he became) at Vimeiro. He was also descended from Governor Sir Robert Eden, 1st Baronet, of Maryland and, through the Calvert Family of Maryland, he was connected to the ancient Roman Catholic aristocracy of the Arundell and Howard families, some of whom were Roman Catholics like the Dukes of Norfolk and others Anglican such as the earls of Carlisle, Effingham and Suffolk. The Calverts had converted to the Established Church early in the 18th century to regain the proprietorship of Maryland. He was also descendant from the Schaffalitzky de Muckadell family of Denmark, and Bie family of Norway. Eden was once amused to learn that one of his ancestors had, like Churchill's ancestor the Duke of Marlborough, been the lover of Barbara Castlemaine.

Ex Output:
b

Ex Input:
Question: How many mixtapes did Tinie Tempah release before Krept and Konan were featured on Happy Birthday? Passage:In 2011, they released a cover of Jay-Z's and Kanye West's "Otis" which helped them rise to fame. The video reached five million views in its first five days of being uploaded to YouTube. However, with much pressure received from Jay-Z's legal team the video was removed from the duo's profile. Undeterred by the controversy, they released a cover of Drake and Lil Wayne's "The Motto", launched their own clothing line called Play Dirty and early into 2012 were invited to join the British rapper Skepta on his tour in the UK. They appeared on Tinie Tempah's 2011 mixtape Happy Birthday and in 2013 they released their third mixtape Young Kingz, with features from Chip, Tinie Tempah, G FrSH, Giggs, George the Poet, Yungen, Ari, Yana Toma, Fekky, Siah and Anthony Thomas. The album's promotional single "Don't Waste My Time" rose to fame in January 2014, with notable artists such as French Montana, Wretch 32, Chip, G FrSH, Double S, Lady Leshurr, Yungen, Sneakbo MNEK, Dru Blu, Jacob Banks and Dot Rotten all contributing to remixes of the track. Tinie Tempah also freestyled over the beat on Charlie Sloth's Fire in the Booth.

Ex Output:
a