A football player blocks someone from the other team so his teammate can pass the ball down the field.
Some players are on the field.
Usually, two full football teams on a field would be described as many, not some.
exists e1 p1 x1 x2 x3 x4 x5 x6 x7.(-(x5 = x5) & n_team(x5) & n_field(x7) & n_ball(x6) & for(e1,x1) & r_someone(e1) & from(e1,x5) & r_so(x5) & exists e2.(Theme(e2,x6) & Actor(e2,x4) & v_pass(e2) & down(x6,x7)) & Topic(e1,p1) & Actor(e1,x4) & v_can(e1) & n_teammate(x4) & of(x4,x1) & n_male(x1) & n_block(x1) & of(x1,x3) & n_player(x3) & of(x1,x2) & n_football(x2))
exists p1 x1 x2.(n_field(x2) & on(x1,x2) & n_player(x1))