The boat is white
The boat has one color.
That the boat is white doesn´t necessarily mean it has only one color.
exists s1 x1.(n_boat(x1) & Theme(s1,x1) & a_white(s1))
exists e1 x1 x2.(n_boat(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_color(x2) & card_eq_1(x2))