Task: Explanation
Input (English): Back from Earth is the debut EP by American alternative rock band Awolnation. It was released digitally by Red Bull Records on May 18, 2010 for iTunes. "Sail", "Burn It Down" and "Guilty Filthy Soul" appear on "Megalithic Symphony", the band's debut album. The EP also features a dubstep remix for "Burn It Down" by Innerpartysystem, which appears on the deluxe version of the album along with "MF". Question: Which debut album has sold over half a million copies in the United States and is by an American alternative rock band that released its first digital debut EP on May 2010 of a different album? Answer: Megalithic Symphony
Output (English):  It was released digitally by Red Bull Records on May 18, 2010 for iTunes.