Two groups of swimmers wade out.
two groups are in the water
Two groups of swimmers wade out which means they are in the water.
exists e1 s1 x1 x2.(a_out(s1) & Manner(e1,s1) & Actor(e1,x1) & v_wade(e1) & of(x1,x2) & n_swimmer(x2) & n_group(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_water(x2) & in(x1,x2) & n_group(x1) & card_eq_2(x1))