Task: Explanation
Input (English): Crystal Castles are a Canadian electronic music group formed in 2006 in Toronto, Ontario by founding members songwriter/producer Ethan Kath and songwriter/vocalist Alice Glass. Current band members consist of Ethan Kath and Edith Frances. Crystal Castles are known for their chaotic live shows and lo-fi melancholic homemade productions. They released many limited vinyl singles between 2006 and 2007 before releasing a trilogy of critically acclaimed albums between 2008 and 2012. Question: In which year did this Canadian electronic music group formed in 2006 in Toronto by Ethan Kath and Alice Glass release their fourth full-length album? Answer: 2016
Output (English): Crystal Castles are a Canadian electronic music group formed in 2006 in Toronto, Ontario by founding members songwriterproducer Ethan Kath and songwritervocalist Alice Glass.