Groom posing with bridesmaids.
People taking bridal pictures
It says they are taking pictures of the groom and the bridesmaids, but it does not saying anything about the bride, who is needed for bridal pictures in sentence 2.
exists e1 x1 x2.(ne_nam_groom(x1) & with(e1,x2) & n_bridesmaid(x2) & Actor(e1,x1) & v_pose(e1))
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_picture(x3) & a_bridal(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1))