Two men are engaged in a wrestling competition.
Men are sumo wrestling.
Just because men are sumo wrestling doesn't mean they are competing.
exists e1 s1 x1 x2.(in(e1,x2) & n_competition(x2) & a_wrestling(s1) & Theme(s1,x2) & Theme(e1,x1) & v_engage(e1) & n_man(x1) & card_eq_2(x1))
exists p1 x1.(exists s1 x2.((x1 = x2) & n_wrestling(x2) & a_sumo(s1) & Theme(s1,x2)) & n_man(x1))