man operating a blue forklift
the man operates a purple ferris-wheel at the local fair
Purple and blue are different colors.  A ferris-wheel and a forklift are different machines.
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 x1 x2 x3 x4.(n_fair(x4) & a_local(s1) & Theme(s1,x4) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_operate(e1) & at(x2,x4) & n_ferris-wheel(x2) & of(x2,x3) & n_purple(x3))