Four crosscountry skiers climb uphill.
There are seven skiers in the group.
Just because four crosscountry skiers climb uphill does not imply that there are seven skiers in the group.
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 p1 x1 x2.(n_group(x2) & in(p1,x2) & exists x3.((x1 = x3) & n_skier(x3) & card_eq_7(x3)))