An elderly man communicates with a man and a woman.
Nobody is communicating
If nobody is communicating, then an elderly man cannot be communicating with a man and a woman.
exists e1 s1 x1 x2 x3 x4.(with(e1,x2) & subset_of(x4,x2) & n_woman(x4) & subset_of(x3,x2) & n_man(x3) & Actor(e1,x1) & v_communicate(e1) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))
-exists e1 x1.(Actor(e1,x1) & v_communicate(e1) & n_person(x1))