The young lady with the red shirt is in front of the crowd.
There is a woman in front of a crowd.
Lady is a synonym for woman.
exists p1 s1 s2 x1 x2 x4.(n_crowd(x4) & n_shirt(x2) & a_red(s2) & Theme(s2,x2) & n_lady(x1) & a_young(s1) & Theme(s1,x1) & exists x3.(in(x1,x3) & of(x3,x4) & n_front(x3)) & with(x1,x2))
exists p1 x1 x2 x3 x4.((x1 = x2) & in(x2,x3) & of(x3,x4) & n_crowd(x4) & n_front(x3) & n_woman(x2))