premise: Elderly woman climbing up the stairs.
hypothesis: The young lady was walking down the stairs.
explanation_1: The woman can either be young or old and she can be either moving up or down the stairs. Not both.
explanation_2: Answer: Either there are two females one elderly woman climbing upstairs and the other young lady down the stairs
explanation_3: The woman cannot be elderly and young simultaneously.
premise_logic: exists e1 s1 s2 x1 x2 x3.(n_stair(x3) & a_topic(x1) & a_up(s2) & Manner(e1,s2) & Theme(e1,x3) & Actor(e1,x2) & v_climb(e1) & (x1 = x2) & n_woman(x1) & a_elderly(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 s2 x1 x2.(n_stair(x2) & n_lady(x1) & a_young(s1) & Theme(s1,x1) & a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1))
premise_sim: exists e1 s1 s2 x1 x2 x3.(v_climb(e1) & n_woman(x1) & n_stair(x3) & a_up(s2) & a_topic(x1) & a_elderly(s1) & Theme(s1,x1) & Theme(e1,x3) & Manner(e1,s2) & Actor(e1,x2) & (x1 = x2))
hypothesis_sim: exists e1 s1 s2 x1 x2.(v_walk(e1) & n_stair(x2) & n_lady(x1) & a_young(s1) & a_down(s2) & Theme(s1,x1) & Theme(e1,x2) & Manner(e1,s2) & Actor(e1,x1))