People protesting immigration.
People are upset.
When people protest they are upset.
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_protest(e1) & n_immigration(x3) & (x1 = x2) & n_people(x1))
exists e1 x1.(Theme(e1,x1) & v_upset(e1) & n_people(x1))