A group of people are sitting in a circle with a leader.
A group of fat people are sitting in a circle with a leader.
Not all groups of people are fat people
exists e1 x1 x2 x3 x4.(with(e1,x4) & n_leader(x4) & in(e1,x3) & n_circle(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(with(e1,x4) & n_leader(x4) & in(e1,x3) & n_circle(x3) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & a_fat(s1) & Theme(s1,x2) & n_group(x1))