Women in black dress taking picture of children in front of flowers.
The flowers are roses.
There are many kinds of flowers, without having been told they were roses you wouldn't know.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_take(e1) & of(x4,x5) & in(x5,x6) & of(x6,x7) & n_flower(x7) & n_front(x6) & n_child(x5) & n_picture(x4) & (x2 = x3) & n_dress(x2) & a_black(s1) & Theme(s1,x2) & n_woman(x1))
exists p1 x1.(n_flower(x1) & exists x2.((x1 = x2) & n_rose(x2)))