Several elderly people are interacting with others.
The elderly people are sitting very still.
If people are interacting, then they are not sitting still.
exists e1 s1 s2 x1 x2.(with(e1,x2) & -(x2 = x1) & n_person(x1) & n_person(x2) & Actor(e1,x1) & v_interact(e1) & n_people(x1) & a_elderly(s2) & Theme(s2,x1) & a_several(s1) & Theme(s1,x1))
exists e1 p1 s1 x1.(n_people(x1) & a_elderly(s1) & Theme(s1,x1) & exists s2.(r_very(s2) & Theme(s2,x1) & a_still(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1))