A man wearing shorts a long with many other people are sitting in the snow.
The group is outside.
A group is a collection of several people.  Since the man is with many other people and sitting in the snow, it follows that he is part of a group, and that group is outside since there is snow where they are sitting.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_snow(x7) & n_people(x6) & in(e2,x7) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & r_a(s1) & with(s1,x5) & -(x5 = x6) & n_people(x5) & n_quantity(x5) & Theme(s1,x4) & a_long(s1) & (x3 = x4) & n_shorts(x3) & (x1 = x2) & n_man(x1))
exists s1 x1.(n_group(x1) & Theme(s1,x1) & a_outside(s1))