One person is exiting the bottom of a long escalator while another has just entered at the bottom.
Some people take the elevator up to the penthouse.
One person is less than some people. An escalator and an elevator are different methods of travelling between building floors.
exists e1 p1 s1 x1 x2 x3.(n_bottom(x2) & n_bottom(x2) & exists e2 s2 x4.(a_just(s2) & Manner(e2,s2) & at(e2,x2) & Actor(e2,x4) & v_enter(e2) & n_thing(x4)) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_exit(e1) & of(x2,x3) & n_escalator(x3) & a_long(s1) & Theme(s1,x3) & n_person(x1) & card_eq_1(x1))
exists e1 x1 x2 x3.(n_penthouse(x3) & n_elevator(x2) & to(e1,x3) & r_up(e1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_people(x1))