A person with a backpack stands on a snowy mountain.
Snow is all around the person
A person with a backpack is a type of person, and snowy mountain implies snow is all around.
exists e1 s1 x1 x2 x3.(on(e1,x3) & n_mountain(x3) & a_snowy(s1) & Theme(s1,x3) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_backpack(x2) & n_person(x1))
exists p1 x1 x2.(n_person(x2) & ne_nam_snow(x1) & r_all(x1) & around(x1,x2))