A man at a park is taking pictures.
A man is taking pictures of a hockey game.
A man can be taking pictures either at a hockey game or at a park, but not both simultaneously.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_picture(x3) & at(x1,x2) & n_park(x2) & n_man(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & n_game(x3) & of(x3,x4) & n_hockey(x4) & n_picture(x2) & n_man(x1))