question: What was required of a LaserDisc to continue playback after 60 minutes ?
answer: a disc has to be flipped over in order to continue watching
turker_answer: A disc has to be flipped over in order to continue watching was required of a LaserDisc to continue playback after 60 minutes .
rule-based: A disc has to be flipped over in order to continue watching was required of a LaserDisc to continue playback after 60 minutes .