premise: A father sitting on an exercise ball holding his newborn, while his toddler son hangs on to his back.
hypothesis: The father is getting ready to play with his son.
explanation_1: Just because the father has a ball does not mean that he is getting ready to play with his son.
explanation_2: First sentence does not refer to the father getting ready to play with his son
explanation_3: A father can be holding his child without getting ready to play with him.
premise_logic: exists e1 e2 p1 x1 x2 x3 x4 x5 x6 x7 x8.(a_topic(x1) & for(e1,e2) & exists e3 x1.(r_on(e3) & to(e3,x8) & n_male(x1) & Actor(e3,x6) & v_hang(e3)) & n_back(x8) & of(x8,x1) & n_son(x6) & of(x6,x7) & n_toddler(x7) & of(x6,x1) & n_male(x1) & n_male(x1) & while(e2,p1) & Theme(e2,x5) & Actor(e2,x2) & v_hold(e2) & n_newborn(x5) & of(x5,x1) & on(e1,x3) & n_ball(x3) & of(x3,x4) & n_exercise(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_father(x1))
hypothesis_logic: exists e1 p1 x1 x2.(n_son(x2) & of(x2,x1) & n_male(x1) & n_father(x1) & exists p2 s1.(Topic(s1,p2) & Actor(s1,x1) & a_ready(s1) & exists e2.(with(e2,x2) & Actor(e2,x1) & v_play(e2))) & Topic(e1,p1) & Actor(e1,x1) & v_get(e1))