A group of girls is walking down the street.
A bunch of girls talk as they walk down the street.
Just because A group of girls is walking down the street doesn't mean they talk.
exists e1 s1 x1 x2 x3.(n_street(x3) & a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_girl(x2) & n_group(x1))
exists e1 p1 x1 x2 x3.(n_street(x3) & exists e2.(down(e2,x3) & Actor(e2,x1) & v_walk(e2)) & n_thing(x1) & as(e1,p1) & Actor(e1,x1) & v_talk(e1) & of(x1,x2) & n_girl(x2) & n_bunch(x1))