A group of hikers are resting on the ground in front of some mountains.
The hikers are friends.
A group of hikers do not have to be friends.
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.(n_hiker(x1) & exists x2.((x1 = x2) & n_friend(x2)))