A boy in yellow walks down the street.
The boy is dressed in black.
The boy should dressed in either black or yellow.
exists e1 x1 x2 x3.(n_street(x3) & down(e1,x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_yellow(x2) & n_boy(x1))
exists e1 s1 x1 x2.(n_boy(x1) & Theme(e1,s1) & Theme(s1,x2) & a_black(s1) & Theme(e1,x1) & v_dress(e1))