Two men are challenging each other in a medieval dual.
two friends embrace each other
Challenging each other in a medieval dual does not mean you embrace each other.
exists x1.(all x2.(n_other(x2) -> exists e1 s1 x3.(in(e1,x3) & n_medieval(x3) & a_dual(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_challenge(e1))) & n_man(x1) & card_eq_2(x1))
exists x1.(all x2.(n_other(x2) -> exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_embrace(e1))) & n_friend(x1) & card_eq_2(x1))