premise: A woman is standing on the sidewalk, in front of a crosswalk.
hypothesis: A woman on the sidewalk.
explanation_1: The fact that the woman is in front of a crosswalk does not negate the fact that she is still on the sidewalk.  The phrase "standing on" implies that she is "on" the sidewalk.
explanation_2: Is standing on the sidewalk is a rephrasing of on the sidewalk.
explanation_3: standing on the sidewalk means on the sidewalk
premise_logic: exists e1 x1 x2 x3 x4.(n_sidewalk(x2) & in(e1,x3) & of(x3,x4) & n_crosswalk(x4) & n_front(x3) & on(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_woman(x1))
hypothesis_logic: exists x1 x2.(n_sidewalk(x2) & a_topic(x1) & on(x1,x2) & n_woman(x1))