a boy dressed as a pirate smiles largley.
A boy in a pirate costume smiles.
Dressed as a pirate implies he is in a pirate costume.
exists e2 e1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_smile(e2) & n_largley(x4) & as(e1,x3) & n_pirate(x3) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2 x3.(Actor(e1,x1) & v_smile(e1) & in(x1,x2) & n_costume(x2) & of(x2,x3) & n_pirate(x3) & n_boy(x1))