A male is sitting down on the beach playing a guitar.
A male  is standing on the beach playing a guitar.
The man is either sitting on the beach or standing on the beach, he cannot be doing both.
exists e2 e1 s1 x1 x2 x3.(n_beach(x2) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_play(e2) & n_guitar(x3) & on(e1,x2) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_sit(e1) & n_male(x1))
exists e2 e1 x1 x2 x3.(n_beach(x2) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_play(e2) & n_guitar(x3) & on(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_male(x1))