A woman is a blue top is walking amidst a crowd.
The woman is swimming.
Just because she's a woman does not mean she is wearing a blue top.  Walking and swimming are different exercises.
exists e1 p1 x1 x2 x3.(amidst(e1,x3) & n_crowd(x3) & Actor(e1,x1) & v_walk(e1) & exists s1 x4.((x2 = x4) & n_top(x4) & a_blue(s1) & Theme(s1,x4)) & (x1 = x2) & n_woman(x1))
exists p1 x1.(n_woman(x1) & exists x2.((x1 = x2) & n_swimming(x2)))