Two professional soccer players are playing with a ball on the field.
A defender steps in front of a striker during a game of soccer.
It is not implied that a defenders steps in front.
exists e1 s1 x1 x2 x3 x4.(n_field(x4) & with(e1,x3) & on(x3,x4) & n_ball(x3) & Actor(e1,x1) & v_play(e1) & n_player(x1) & of(x1,x2) & n_soccer(x2) & a_professional(s1) & Theme(s1,x1) & card_eq_2(x1))
exists x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(x1,x3) & during(x3,x5) & of(x5,x6) & n_soccer(x6) & n_game(x5) & of(x3,x4) & n_striker(x4) & n_front(x3) & n_step(x1) & of(x1,x2) & n_defender(x2))