Two guys in a boat sailing along the ocean.
Four men in a boat sail across the river
Two guys are different then four guys and the river is not part of the ocean.
exists x1 x2 x3 x4.(n_ocean(x4) & a_topic(x1) & along(x1,x4) & in(x1,x2) & n_sailing(x2) & of(x2,x3) & n_boat(x3) & n_guy(x1) & card_eq_2(x1))
exists x1 x2 x3 x4.(n_river(x4) & a_topic(x1) & across(x1,x4) & in(x1,x2) & n_sail(x2) & of(x2,x3) & n_boat(x3) & n_man(x1) & card_eq_4(x1))