premise: A couple sitting in white lawn chairs are smiling at the camera.
hypothesis: A woman is standing alone.
explanation_1: The woman can not be part of the couple sitting while she is standing alone.
explanation_2: A woman standing alone can never be a couple.
explanation_3: Couple implies two people, a woman is one person.  One cannot be standing and sitting at the same time.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5.(n_camera(x5) & at(e2,x5) & Actor(e2,x1) & v_smile(e2) & in(e1,x3) & n_chair(x3) & of(x3,x4) & n_lawn(x4) & a_white(s1) & Theme(s1,x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_couple(x1))
hypothesis_logic: exists e1 s1 x1.(a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_woman(x1))