At a fencing tournament in a gymnasium two fencers engage in a duel with their swords.
Two wrestlers square off for a match.
The pieces of information that contradict each other are the wrestlers squaring off for a match as against fencers in a fencing tournament engaging in a duel in the fist sentence.
exists e1 x1 x2 x3 x4 x5 x6.(at(e1,x4) & in(x4,x6) & n_gymnasium(x6) & n_tournament(x4) & of(x4,x5) & n_fencing(x5) & in(e1,x2) & with(x2,x3) & n_sword(x3) & of(x3,x1) & n_thing(x1) & n_duel(x2) & Actor(e1,x1) & v_engage(e1) & n_fencer(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3 x4.(r_.(e1) & for(e1,x4) & n_match(x4) & Theme(e1,x2) & Actor(e1,x1) & v_event(e1) & n_square(x2) & a_off(s1) & Theme(s1,x2) & of(x2,x3) & n_wrestler(x3) & card_eq_2(x2) & n_thing(x1))