One person is exiting the bottom of a long escalator while another has just entered at the bottom.
One person is exiting the bottom of a long escalator while two more have just entered at the bottom.
Another person does not imply two more people.
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 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_more(x4) & card_eq_2(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))