Group of blue shirted people.
A group of people.
we don't know a group of people.
exists s1 s2 s3 x1.(ne_org_group(s1) & a_topic(s1) & of(s1,x1) & n_people(x1) & a_shirted(s3) & Theme(s3,x1) & a_blue(s2) & Theme(s2,x1))
exists x1 x2.(a_topic(x1) & of(x1,x2) & n_people(x2) & n_group(x1))