A large yellow dog is sitting on a hill.
A dog climbed a hill.
There are other ways to get to the top of a hill, it can be climbed, or perhaps the dog got a ride, or has never been off the top of the hill.
exists e1 s1 s2 x1 x2.(on(e1,x2) & n_hill(x2) & Actor(e1,x1) & v_sit(e1) & n_dog(x1) & a_yellow(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_hill(x2) & Time(e1,x2) & Actor(e1,x1) & v_climb(e1) & n_dog(x1))