Children are listening to a man doing a demonstration in their classroom.
Children are listening to a man speak about bullying
A man doing a demonstration is not assumed to speak about bullying.
exists e1 e2 x1 x2 x3 x4 x5.(to(e1,x2) & in(e2,x5) & n_classroom(x5) & of(x5,x1) & n_thing(x1) & Theme(e2,x4) & Actor(e2,x3) & v_do(e2) & n_demonstration(x4) & (x2 = x3) & n_man(x2) & Actor(e1,x1) & v_listen(e1) & n_child(x1))
exists e2 e3 e1 x1 x2 x3 x4.(about(e2,e3) & Actor(e3,x4) & v_bully(e3) & Actor(e2,x1) & v_speak(e2) & to(e1,x3) & n_man(x3) & Actor(e1,x2) & v_listen(e1) & (x1 = x2) & n_child(x1))