premise: A young girl in a cute hat and pink sweater pushes a toy lawn mower in front of a bicycle.
hypothesis: The girl just got the hat for her birthday.
explanation_1: Not every hat a girl owns is a recent gift for her birthday.
explanation_2: Just because the girl is wearing the hat does not mean she got it for her birthday, that she just got it, or even that she got it at all.  It could belong to someone else.
explanation_3: You can not infer it was for her birthday.
premise_logic: exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x8 x9.(Theme(e1,x5) & Actor(e1,x1) & v_push(e1) & in(x5,x8) & of(x8,x9) & n_bicycle(x9) & n_front(x8) & n_mower(x5) & of(x5,x7) & n_lawn(x7) & of(x5,x6) & n_toy(x6) & subset_of(x4,x1) & n_sweater(x4) & a_pink(s3) & Theme(s3,x4) & subset_of(x2,x1) & in(x2,x3) & n_hat(x3) & a_cute(s2) & Theme(s2,x3) & n_girl(x2) & a_young(s1) & Theme(s1,x2))
hypothesis_logic: exists e1 s1 x1 x2 x3.(n_birthday(x3) & of(x3,x2) & n_female(x2) & n_hat(x2) & n_girl(x1) & a_just(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & for(x2,x3))