Premise: Black Sabbath . A year after embarking on a farewell tour , the band played their final concert in their home city of Birmingham on 4 February 2017 , after which they broke up . The End Tour was the farewell tour of the heavy metal band Black Sabbath , featuring founding members Ozzy Osbourne , Tony Iommi and Geezer Butler .
Hypothesis: Black Sabbath was a musical group.
Label: ENTAILMENT