A group of hikers are resting on the ground in front of some mountains.
There are people outdoors.
A group of hikers are people, and mountains are outdoors, thus the group of hikers must be outdoors.
exists e1 x1 x2 x3 x4 x5.(n_ground(x3) & on(e1,x3) & in(x3,x4) & of(x4,x5) & n_mountain(x5) & n_front(x4) & Actor(e1,x1) & v_rest(e1) & of(x1,x2) & n_hiker(x2) & n_group(x1))
exists p1 x1 x2 x3.((x1 = x2) & Time(x2,x3) & n_outdoors(x3) & n_people(x2))