A man plays guitar on waterside bleachers.
A woman is playing trombone by the mountains.
A man is not a woman. A guitar is not a trombone. Waterside bleachers are not by mountains.
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & on(x2,x3) & n_bleacher(x3) & of(x3,x4) & n_waterside(x4) & n_guitar(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_mountain(x3) & by(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_trombone(x2) & n_woman(x1))