man operating a blue forklift
A old man is operating a red forklift.
A man operating a forklift is not necessarily old. A forklift that is blue is not necessarily red.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_operate(e1) & n_forklift(x3) & a_blue(s1) & Theme(s1,x3) & (x1 = x2) & n_man(x1))
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_operate(e1) & n_forklift(x2) & a_red(s2) & Theme(s2,x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))