The camera focuses on two people's legs.
A person is taking a picture.
Just because the camera is focusing on two people, you cannot tell that someone is taking a picture.
exists e1 x1 x2 x3.(n_camera(x1) & on(e1,x3) & n_leg(x3) & of(x3,x2) & n_people(x2) & card_eq_2(x2) & Actor(e1,x1) & v_focus(e1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_person(x1))