A person with brown hair stands in a group.
The brown haired person prepares to lead the group.
the person standing in the group does not imply he prepares to lead them
exists s1 x1 x2 x3 x4.(a_topic(x1) & with(x1,x2) & in(x2,x4) & n_group(x4) & n_stand(x2) & of(x2,x3) & n_hair(x3) & a_brown(s1) & Theme(s1,x2) & n_person(x1))
exists e1 p1 s1 s2 x1 x2.(n_group(x2) & n_person(x1) & a_haired(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1) & Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_lead(e2)))