The trailer is white
The trailer holds items
There is a trailer.
exists s1 x1.(n_trailer(x1) & Theme(s1,x1) & a_white(s1))
exists e1 x1 x2.(n_trailer(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_item(x2))