premise: A little kid in a blue helmet is riding a bike with training wheels on it down a pebbled grassy trail.
hypothesis: A kid in a helmet sleds down a hill.
explanation_1: Sledding is usually with a sled not a bike.
explanation_2: If he is riding a bike, that means he is not sledding down a hill
explanation_3: A kid who sleds down a hill can not be riding a bike.
premise_logic: exists e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7.(n_trail(x6) & of(x6,x7) & n_grassy(x7) & a_pebbled(s4) & Theme(s4,x6) & Time(e1,x6) & a_down(s3) & Manner(e1,s3) & on(e1,x1) & n_thing(x1) & with(e1,x4) & n_wheel(x4) & of(x4,x5) & n_training(x5) & Theme(e1,x3) & Actor(e1,x1) & v_ride(e1) & n_bike(x3) & in(x1,x2) & n_helmet(x2) & a_blue(s2) & Theme(s2,x2) & n_kid(x1) & a_little(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 x1 x2 x3.(a_down(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_sled(e1) & n_hill(x3) & in(x1,x2) & n_helmet(x2) & n_kid(x1))