People ride up an escalator.
They are going higher
escalator implies one is going higher.
exists e1 s1 x1 x2.(a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_escalator(x2) & n_people(x1))
exists e1 p1 x1.(n_thing(x1) & exists s1.(r_more(s1) & Theme(s1,x1) & a_higher(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_go(e1))