Several hikers walking along a rocky path.
A group of hikers navigate a dangerous trail.
Several hikers does not necessarily imply it is a group of hikers. Walking along a rocky path does not imply they navigate a dangerous trail.
exists e1 s1 s2 x1 x2 x3.(a_topic(x1) & along(e1,x3) & n_path(x3) & a_rocky(s2) & Theme(s2,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_hiker(x1) & a_several(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_navigate(e1) & n_trail(x3) & a_dangerous(s1) & Theme(s1,x3) & of(x1,x2) & n_hiker(x2) & n_group(x1))