a skier skiing down a snowy mountainside
The skier is outside.
Snowy mountainsides are usually outside where skiers ski.
exists s1 x1 x2 x3.(a_topic(x1) & down(x1,x3) & n_mountainside(x3) & a_snowy(s1) & Theme(s1,x3) & n_skiing(x1) & of(x1,x2) & n_skier(x2))
exists s1 x1.(n_skier(x1) & Theme(s1,x1) & a_outside(s1))