Rugby players competing in a match.
The quarterback of the home team is gay
There is not a quarterback in rugby.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_match(x4) & Actor(e1,x3) & v_compete(e1) & (x1 = x3) & n_player(x1) & (x1 = x2) & ne_nam_rugby(x2))
exists s1 x1 x2 x3.(n_team(x2) & of(x2,x3) & n_home(x3) & n_quarterback(x1) & Theme(s1,x1) & a_gay(s1) & of(x1,x2))