A man is playing guitar at a stage performance.
A woman is playing guitar in space.
A person cannot be both a man and a woman.
exists e1 x1 x2 x3 x4.(at(e1,x3) & n_performance(x3) & of(x3,x4) & n_stage(x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))
exists e1 x1 x2 x3.(in(e1,x3) & n_space(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_woman(x1))