A guy is playing a bass guitar in a room with posters on the wall.
A woman plays electric guitar outside.
It has to be either a guy or a woman and bass guitar in a room is not the same as electric guitar outside
exists e1 x1 x2 x3 x4 x5 x6.(n_wall(x6) & on(e1,x6) & in(e1,x4) & with(x4,x5) & n_poster(x5) & n_room(x4) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & of(x2,x3) & n_bass(x3) & n_guy(x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2) & of(x2,x3) & n_guitar(x3) & a_electric(s1) & Theme(s1,x2) & n_woman(x1))