A boy is dressed as Freddy Krueger.
A boy is dressed as a nurse.
Freddy Kruger refers to a horror movie character, a nurse is a medical professional.
exists e1 x1 x2 x3.(ne_per_krueger(x2) & (x2 = x3) & ne_per_freddy(x3) & as(e1,x2) & Theme(e1,x1) & v_dress(e1) & n_boy(x1))
exists e1 x1 x2.(as(e1,x2) & n_nurse(x2) & Theme(e1,x1) & v_dress(e1) & n_boy(x1))