Four crosscountry skiers climb uphill.
Four skiers ski uphill quickly.
not all the skiers work quickly
exists s1 s2 x1 x2 x3.(n_uphill(x1) & a_.(s2) & Theme(s2,x1) & of(x1,x3) & n_climb(x3) & of(x1,x2) & n_skier(x2) & a_crosscountry(s1) & Theme(s1,x1) & card_eq_4(x1) & a_topic(x1))
exists s1 x1 x2.(Theme(s1,x1) & a_quickly(s1) & n_ski(x1) & Time(x1,x2) & n_uphill(x2) & n_skier(x1) & card_eq_4(x1))