Two wrestlers grab each other by the arms; a referee is standing by in the background.
A wrestling match is taking place between two wrestlers.
Two wrestlers grab each other and a referee is in the background means there is a wrestling match.
exists e1 s1 x1 x2 x3 x5.(n_background(x3) & n_arm(x5) & in(e1,x3) & a_by(s1) & Manner(e1,s1) & Actor(e1,x2) & v_stand(e1) & n_referee(x2) & all x4.(n_other(x4) -> exists e2.(by(e2,x5) & Theme(e2,x4) & Actor(e2,x1) & v_grab(e2))) & n_wrestler(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(between(e1,x4) & n_wrestler(x4) & card_eq_2(x4) & Theme(e1,x3) & Actor(e1,x1) & v_take(e1) & n_place(x3) & n_match(x1) & of(x1,x2) & n_wrestling(x2))