A man on stage playing the electric guitar during a concert.
A guy plays guitar.
Playing the electric guitar is a rephrasing of plays guitar.
exists e1 s1 x1 x2 x3 x4 x5.(n_guitar(x4) & a_electric(s1) & Theme(s1,x4) & a_topic(x1) & during(e1,x5) & n_concert(x5) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & (x1 = x3) & on(x1,x2) & n_stage(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_guy(x1))