Police officer whistles while he works
A working man makes a tune using his mouth.
A police officer is a working man. He whistles to make a tune.
(x)
exists e1 e2 e3 x1 x2 x3 x4.(Theme(e3,x2) & Actor(e3,x1) & v_make(e3) & Theme(e2,x4) & Actor(e2,x3) & v_use(e2) & n_mouth(x4) & of(x4,x1) & n_male(x1) & (x2 = x3) & n_tune(x2) & n_man(x1) & Actor(e1,x1) & v_work(e1))