a african-american woman stands in the crowd.
An African American woman stands in the crowd of a concert.
Standing in a crowd does not mean that you are at a concert.
exists s1 x1 x2 x3.(n_crowd(x3) & a_topic(x1) & in(x1,x3) & n_stand(x1) & of(x1,x2) & n_woman(x2) & a_african-american(s1) & Theme(s1,x1))
exists s1 s2 x1 x2 x3 x4.(n_crowd(x3) & a_topic(x1) & in(x1,x3) & of(x3,x4) & n_concert(x4) & n_stand(x1) & of(x1,x2) & n_woman(x2) & a_american(s2) & Theme(s2,x1) & a_african(s1) & Theme(s1,x1))