Premise: A dog is perched up against a tree looking at the top .
Correct statement: It is impossible that dogs trying to climb tree
Incorrect statement: Chances are about even that dogs trying to climb tree
Correct statement: Chances are about even that a dog chased a squirrel up a tree and is waiting for it to come back down .
Incorrect statement: It is highly unlikely that a dog chased a squirrel up a tree and is waiting for it to come back down .
Correct statement: Chances are about even that a puppy is looking at a cat .
Incorrect statement: It is certain that a puppy is looking at a cat .
Correct statement: Chances are about even that the dog is watching a cat in the tree .
Incorrect statement: It is highly unlikely that the dog is watching a cat in the tree .
Correct statement: There is little chance that a dog is trying to climb a tree .
Incorrect statement: It is almost certain that a dog is trying to climb a tree .