A woman in a blue shirt in a crowd.
A woman without a crowd.
There can't be a crowd and no crowd.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_crowd(x3) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_woman(x1))
exists x1.(a_topic(x1) & -exists x2.(with(x1,x2) & n_crowd(x2)) & n_woman(x1))