The man carries a large backpack while hiking through snow-covered terrain.
A person is outside.
Hiking is an outside activity
exists e1 e2 s1 s2 x1 x2 x3.(n_man(x1) & while(e1,e2) & through(e2,x3) & n_terrain(x3) & a_snow-covered(s2) & Theme(s2,x3) & Actor(e2,x1) & v_hike(e2) & Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & n_backpack(x2) & a_large(s1) & Theme(s1,x2))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_person(x1))