The mouse cord lies under a white napkin.
The napkin is white.
the white napkin can not only lie under mouse cord
exists e1 s1 x1 x2 x3.(n_cord(x1) & of(x1,x2) & n_mouse(x2) & under(e1,x3) & n_napkin(x3) & a_white(s1) & Theme(s1,x3) & Actor(e1,x1) & v_lie(e1))
exists s1 x1.(n_napkin(x1) & Theme(s1,x1) & a_white(s1))