a man walking away from an escalator while a woman is coming up the escalator.
A man is leaving behind his wife because he has to go to the bathroom.
Walking away from the escalator does not imply he is leaving his wife or that he has to go to the bathroom.
exists e1 p1 x1 x2 x3.(a_topic(x1) & exists e2 s1 x4.(Time(e2,x3) & a_up(s1) & Manner(e2,s1) & Actor(e2,x4) & v_come(e2) & n_woman(x4)) & n_escalator(x3) & n_escalator(x3) & while(e1,p1) & from(e1,x3) & r_away(e1) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_man(x1))
exists e1 p1 x1 x2 x3.(n_bathroom(x3) & exists e2 p2.(Topic(e2,p2) & Actor(e2,x1) & v_have(e2) & exists e3.(to(e3,x3) & Actor(e3,x1) & v_go(e3))) & n_male(x1) & n_male(x1) & because(e1,p1) & behind(e1,x2) & n_wife(x2) & of(x2,x1) & Actor(e1,x1) & v_leave(e1) & n_man(x1))