Four crosscountry skiers climb uphill.
There are four people outside.
The skiers are outside skiing.
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 s1 x1.(a_outside(s1) & Manner(p1,s1) & exists x2.((x1 = x2) & n_people(x2) & card_eq_4(x2)))