A small group of people is chatting in a city plaza.
A group of people are talking.
People chatting means that they are talking.
exists e1 s1 x1 x2 x3 x4.(in(e1,x3) & n_plaza(x3) & of(x3,x4) & n_city(x4) & Actor(e1,x1) & v_chat(e1) & of(x1,x2) & n_people(x2) & n_group(x1) & a_small(s1) & Theme(s1,x1))
exists e1 x1 x2.(Actor(e1,x1) & v_talk(e1) & of(x1,x2) & n_people(x2) & n_group(x1))