A man and woman are riding down an escalator together.
A couple is going down a floor
A man and woman makes two people which is a couple, if they are going down an escalator, they are going down a floor.
exists e1 s1 s2 x1 x2 x3 x4.(a_together(s2) & Manner(e1,s2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & n_escalator(x4) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1))
exists e1 s1 x1 x2.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_go(e1) & n_floor(x2) & n_couple(x1))