A man plays a guitar in a common area.
The man is playing tetris.
The man is either playing a guitar or playing tetris.
exists e1 s1 x1 x2 x3.(in(e1,x3) & n_area(x3) & a_common(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tetris(x2))