A man is sitting in a chair and playing the guitar.
A man is standing on a chair and playing the guitar.
sitting and standing are different actions
exists e1 e2 x1 x2 x3 x4.(n_guitar(x4) & Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_man(x3) & in(e1,x2) & n_chair(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 e2 x1 x2 x3 x4.(n_guitar(x4) & Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_man(x3) & on(e1,x2) & n_chair(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))