Two kids on the beach digging holes in the sand.
The children are swimming in the ocean.
The children cannot be digging in the sand and swimming in the ocean simultaneously.
exists e1 x1 x2 x3 x4 x5.(n_sand(x5) & n_beach(x2) & a_topic(x1) & on(x1,x2) & in(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_dig(e1) & n_hole(x4) & (x2 = x3) & n_kid(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_ocean(x2) & n_child(x1) & in(e1,x2) & Actor(e1,x1) & v_swim(e1))