Two ladies are taking pictures and one is watching.
Two friends take photos while a stranger stares at them with envy.
The ladies do not have to be friends.  The person watching does not have to be a stranger.  Watching does not have to be a stare with envy.
exists e1 e2 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 p1 x1 x2 x3.(with(e1,x3) & n_envy(x3) & exists e2 x4.(at(e2,x1) & Actor(e2,x4) & v_stare(e2) & n_stranger(x4)) & n_thing(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_photo(x2) & n_friend(x1) & card_eq_2(x1))