People with camping equipment on rocky ground.
Three women ride bikes at the beach.
People are not always comprised of three women.  Bikes and camping equipment are different objects.  The beach and rocky ground are different terrains.
exists e1 s1 x1 x2 x3.(a_topic(x1) & with(x1,x2) & on(x2,x3) & n_ground(x3) & a_rocky(s1) & Theme(s1,x3) & n_equipment(x2) & Actor(e1,x2) & v_camp(e1) & n_people(x1))
exists e1 x1 x2 x3.(n_beach(x3) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_woman(x1) & card_eq_3(x1))