Man is demonstrating to a student.
Man dumping a body
The subject dumping a body cannot be demonstrating.
exists e1 x1 x2.(to(e1,x2) & n_student(x2) & Actor(e1,x1) & v_demonstrate(e1) & n_man(x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_dump(e1) & n_body(x3) & (x1 = x2) & n_man(x1))