A snorkeler is under the water taking a picture.
Man makes food on deck of a boat.
if man is cooking on deck of his boat than he cannot be under water.
exists p1 x1 x2.(n_water(x2) & exists e1 x3 x4.(under(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & n_picture(x4) & (x2 = x3)) & n_snorkeler(x1))
exists e1 x1 x2 x3 x4.(on(e1,x3) & of(x3,x4) & n_boat(x4) & n_deck(x3) & Theme(e1,x2) & Actor(e1,x1) & v_make(e1) & n_food(x2) & n_man(x1))