Complex sentence: In 1979, a Michigan State University student, James Dallas Egbert III, allegedly disappeared into the school's steam tunnels while playing a live-action version of "D&D".
Split into simpler sentences: In 1979, a Michigan State University student, James Dallas Egbert III, disappeared into the school's steam tunnels. It was erroneously reported that he disappeared while playing a live-action version of "D&D".