 Complete the following phrase:  The dark rock opera film Pink Floyd  The Wall 1982 contained 15 minutes worth of animated segments by British cartoonist Gerald Scarfe, who had already designed related artwork for the 1979 album and 1980-81 concert tour. Some of the films animated material was previously used for the 1979 music video for Another Brick in the Wall: Part 2 and for the tour. Scarfe had also made animations for Pink Floyds 1977 