A group of people walking together.
A group of angry people.
Just because people are walking in a  group it does not mean they are angry.
exists e1 s1 x1 x2 x3.(a_topic(x1) & of(x1,x2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists s1 x1 x2.(a_topic(x1) & of(x1,x2) & n_people(x2) & a_angry(s1) & Theme(s1,x2) & n_group(x1))