A woman in a blue shirt in a crowd.
A woman is lost in a crowd.
Just because a woman wears a blue shirt does not necessarily mean she is lost in a 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 e1 x1 x2.(in(e1,x2) & n_crowd(x2) & Theme(e1,x1) & v_lose(e1) & n_woman(x1))