School children chase some pigeons.
Children chasing birds infected with rabies.
It's impossible to know the pigeons are infected with rabies.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_chase(e1) & n_pigeon(x3) & n_child(x1) & (x1 = x2) & ne_nam_school(x2))
exists e2 e1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_chase(e2) & with(e1,x5) & n_rabies(x5) & Theme(e1,x4) & v_infect(e1) & (x3 = x4) & n_bird(x3) & (x1 = x2) & n_child(x1))