Two swimmers competing in swim competition.
The two swimmers are both returning champions of their division.
Two swimmers competing in swim competition does not imply that they are both returning champions of their division.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & n_competition(x3) & of(x3,x4) & n_swim(x4) & Actor(e1,x2) & v_compete(e1) & (x1 = x2) & n_swimmer(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(n_division(x3) & of(x3,x1) & n_thing(x1) & n_swimmer(x1) & card_eq_2(x1) & a_both(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_return(e1) & of(x2,x3) & n_champion(x2))