premise: A large tan dog is rolling around on its back in a yard of grass.
hypothesis: A dog is having fun on a sunny day.
explanation_1: Just because the dog is rolling around doesn't mean it's having fun. Just because the dog is in a yard doesn't mean it's sunny.
explanation_2: Just because the dog is rolling around on its back, it doesn't mean it's a sunny day, or that it is having fun.
explanation_3: A dog rolling around may be having fun, but it also may be in pain so fun can't be inferred. There is also no indication that the day is sunny.
premise_logic: exists e1 s1 s2 s3 x1 x2 x3 x4.(a_around(s3) & Manner(e1,s3) & on(e1,x2) & in(x2,x3) & of(x3,x4) & n_grass(x4) & n_yard(x3) & n_back(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_roll(e1) & n_dog(x1) & a_tan(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 x1 x2 x3.(on(e1,x3) & n_day(x3) & a_sunny(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fun(x2) & n_dog(x1))