There are two young guys in a martial arts tournament.
The martial arts instructor teaches a class.
There would normally be more than two guys in a class that he teaches.
exists p1 x1 s1 s2 x2 x3 x4.((x1 = x2) & in(x2,x3) & n_tournament(x3) & of(x3,x4) & n_art(x4) & a_martial(s2) & Theme(s2,x3) & n_guy(x2) & a_young(s1) & Theme(s1,x2) & card_eq_2(x2))
exists e1 s1 x1 x2 x3.(n_instructor(x1) & of(x1,x2) & n_art(x2) & a_martial(s1) & Theme(s1,x1) & Theme(e1,x3) & Actor(e1,x1) & v_teach(e1) & n_class(x3))