A large group of people explore around a rock structure.
A group of friends are exploring the rocks.
Just because a group of people explore rocks it does not mean they are friends.
exists e1 s1 x1 x2 x3 x4.(around(e1,x3) & n_structure(x3) & of(x3,x4) & n_rock(x4) & Actor(e1,x1) & v_explore(e1) & of(x1,x2) & n_people(x2) & n_group(x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_rock(x3) & Theme(e1,x3) & Actor(e1,x1) & v_explore(e1) & of(x1,x2) & n_friend(x2) & n_group(x1))