Two ladies are taking pictures and one is watching.
People are taking pictures.
People is a general phrase that would include two ladies, and both are taking pictures, inferring that people and two ladies are the same subject
exists e2 e1 x1 x2 x3.(Actor(e2,x3) & v_watch(e2) & n_thing(x3) & card_eq_1(x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_lady(x1) & card_eq_2(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_people(x1))