A group of people in life jackets standing on a large boulder in the mountains.
A group of people are outside.
The mountains are outside.  If the people are in the mountains, they would have to be outside.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(n_mountain(x7) & a_topic(x1) & of(x1,x2) & in(x2,x3) & in(e1,x7) & on(e1,x6) & n_boulder(x6) & a_large(s1) & Theme(s1,x6) & Actor(e1,x5) & v_stand(e1) & (x3 = x5) & n_jacket(x3) & of(x3,x4) & n_life(x4) & n_people(x2) & n_group(x1))
exists s1 x1 x2.(Theme(s1,x1) & a_outside(s1) & of(x1,x2) & n_people(x2) & n_group(x1))