A group of kids hiking on a trail.
Boy Scouts are hiking on a trail.
Just because a group of kids are hiking doesn't mean they are Boy Scouts.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & on(e1,x4) & n_trail(x4) & Actor(e1,x3) & v_hike(e1) & (x2 = x3) & n_kid(x2) & n_group(x1))
exists e1 x1 x2 x3.(ne_nam_scouts(x1) & (x1 = x2) & ne_nam_boy(x2) & on(e1,x3) & n_trail(x3) & Actor(e1,x1) & v_hike(e1))