A football player blocks someone from the other team so his teammate can pass the ball down the field.
A football player blocks the other team so his teammate can throw the ball because their team is down and needs a score.
Just because a player blocks someone doesn't mean that their team is down.  Just because blocking and passing is happening does not necessarily mean that that team needs a score.
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 x3 x4 x5 x6 x7 x8.(n_thing(x8) & n_thing(x5) & n_ball(x7) & n_teammate(x6) & of(x6,x5) & n_male(x5) & n_team(x5) & a_topic(x1) & exists e1 p2.(exists e2 p3.(exists e3 s1 x9.(Theme(e3,x9) & Actor(e3,x4) & v_need(e3) & n_score(x9) & Theme(s1,x4) & a_down(s1)) & because(e2,p3) & Theme(e2,x7) & Actor(e2,x6) & v_throw(e2)) & Topic(e1,p2) & Actor(e1,x6) & v_can(e1)) & n_team(x4) & n_team(x4) & of(x4,x8) & of(x4,x5) & that(x1,p1) & r_so(x1) & -(x4 = x5) & (x1 = x4) & n_block(x1) & of(x1,x3) & n_player(x3) & of(x1,x2) & n_football(x2))