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.
--------
Question: Question: How many years apart in age were Sweyn's sons? Passage:Gorm's son, Harald Bluetooth succeeded his father as king and married possibly three times with Gunhild, Tove and Gyrid. Harald had a son named Sweyn Forkbeard. Sweyn succeeded his father as king and married Gunhild (Swietosawa of Poland). They had a son named Cnut the Great. Sweyn also ruled England in his lifetime and established the Danish Empire. When Sweyn died, his elder son Harald Svendsen became the King of Denmark, while England's former king, Ethelred, reclaimed the throne. Following Harald's death, his brother Cnut the Great became king, re-established the Danish North Sea Empire. He married Emma of Normandy with whom he had a son named Harthacnut. When Cnut died (and after the brothers of Harthacnut also had died), Harthacnut became king of Denmark and England. Upon his death, Edward the Confessor became ruler of England in 1042. Sweyn Forkbeard also had a daughter, Estrid, from whom all ruling kings and queens of Denmark after 1047 descend.

Answer: b

Question: Question: How many times has Royal Variety been on ITV? Passage:On 11 November, Diversity conducted several hours of signing autographs and posing for photographs with thousands of fans at The Galleria Shopping Centre in Hatfield, Hertfordshire. Afterwards, they hosted a prize-giving ceremony on stage and performed their "Michael Jackson" dance routine. They performed another Michael Jackson tribute at the MOBO award ceremony. Diversity "launched" Christmas at Lakeside on 1 November, where they took two members of the audience on-stage for a dance-off. There was a competition held in November, and a hundred people won a meet and greet with Diversity on 19 November at The Glades in Bromley. On 7 December, Diversity performed on the Royal Variety Performance, hosted in Blackpool and shown on ITV across the UK on 16 December. On the show Got to Dance Warm Up, they presented their Westfield Shopping Centre FlashMob, sponsored by T-Mobile.

Answer: a

Question: Question: How many tracks other than Kitty Kat were included on the album that it was on? Passage:"Kitty Kat" received generally favorable reviews from critics. Eb Haynes of AllHipHop described "Kitty Kat" as a seductive track. Norman Mayers of Prefix Magazine wrote that B'Day is packed with standouts such as "the Rich Harrison-produced 'Freakum Dress' and the Neptunes-helmed 'Kitty Kat'." Picking out "Kitty Kat" as one of the four top tracks of the album, Spence D of IGN Music added that the song slows things down, allowing for Knowles' "crystal clear vocals to take some down time and relinquish up a dreamy, creamy sound that is playfully sensuous." Andy Kellman of Allmusic described "Kitty Kat" as "a deceptively sweet, rainbow-colored track" where purrs - that are sound made by all species of felids and are a part of cat communication - are more like "claws-out dismissals." Jon Pareles of The New York Times called the song a "cooing [and] sighing" one. Sal Cinquemani of Slant Magazine noted that "Kitty Kat" was "the only mid-tempo break" until the very end of the album. Darryl Sterdan, writing for the Canadian website Jam!, said that the song is just about what you think. Thomas Inskeep of Stylus Magazine commented that "Kitty Kat" seems to be an obvious tracks produced by The Neptunes. He went on complimenting "the squishy R&B keyboard which works well with the song's 'I'm not feelin[g] it' vibe." A writer of the Seattle Post-Intelligencer commented, "Beyonce is better at being sexy than sarcastic, and 'Kitty Kat' doesn't make any bones about what her absentee lover is missing." Michael Roberts of New Times Broward-Palm Beach commented that Knowles "purrs at lower speed" in the song.

Answer:
b