A man playing a guitar on stage while a man plays drums in the background.
The men are in a jazz rock band.
There wasn't a jazz genre mentioned in the first sentence
exists e1 e2 x1 x2 x3 x4 x5 x6 x7.(n_background(x7) & in(e2,x7) & Theme(e2,x6) & Actor(e2,x1) & v_play(e2) & n_drum(x6) & while(e1,x5) & n_man(x5) & on(e1,x4) & n_stage(x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_guitar(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2 x3 x4.(in(x1,x2) & n_band(x2) & of(x2,x4) & n_rock(x4) & of(x2,x3) & n_jazz(x3)))