premise: A young boy kissing an old man on the forehead.
hypothesis: The boy is kissing his grandpa on the forehead.
explanation_1: You can not infer the old man is hid grandpa.
explanation_2: Boys can kiss old men other than their Grandpa.
explanation_3: not all old men are grandpa
premise_logic: exists e1 s1 s2 x1 x2 x3 x4.(n_forehead(x4) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_kiss(e1) & on(x3,x4) & n_man(x3) & a_old(s2) & Theme(s2,x3) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_forehead(x3) & n_grandpa(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_kiss(e1) & on(x2,x3))