there are four snow skiers going down the side of a hill.
4 people race each other down a hill on skis.
Four skiers going down the side hill need not necessarily be participating in a race.
exists p1 x1 x4.(n_side(x4) & exists e1 s1 x2 x3 x5.((x1 = x2) & down(e1,x4) & of(x4,x5) & n_hill(x5) & Actor(e1,x3) & v_go(e1) & (x2 = x3) & n_skier(x2) & a_snow(s1) & Theme(s1,x2) & card_eq_4(x2)))
all x1.(n_other(x1) -> exists e1 x2 x3 x4.(down(e1,x3) & on(x3,x4) & n_ski(x4) & n_hill(x3) & Time(e1,x1) & Actor(e1,x2) & v_race(e1) & n_people(x2) & n_date(x2) & a_date_day_04(x2) & a_date_day_04(x2)))