premise: A boy wearing blue jeans is skateboarding.
hypothesis: a boy skateboards with his sister.
explanation_1: A boy skateboarding doesn't imply that he's skateboarding with his sister.
explanation_2: The boy is not necessarily skateboarding with his sister.
explanation_3: Just because a boy wearing blue jeans is skateboarding, does mean he is skateboarding with his sister.
premise_logic: exists e1 e2 s1 x1 x2 x3.(Actor(e2,x1) & v_skateboard(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jeans(x3) & a_blue(s1) & Theme(s1,x3) & (x1 = x2) & n_boy(x1))
hypothesis_logic: exists x1 x2 x3.(a_topic(x1) & with(x1,x3) & n_sister(x3) & of(x3,x1) & n_male(x1) & n_skateboard(x1) & of(x1,x2) & n_boy(x2))