Q: Premise: "The boy safely skates up the ramp before descending again."
Hypothesis: "Black college boy ramps up the skate."
Do we know that the hypothesis entailed by the premise?
A: Not all boys are black. Not all boys are in college.
The answer is it is not possible to tell.

Q: Premise: "Three dogs are on a cobblestone road."
Hypothesis: "Some dogs are drinking out of a lake."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: The dogs cannot be on a cobblestone road and drinking out of a lake simultaneously.
The answer is no.

Q: Given the sentence "A man sitting in the street with no shoes on." is it true that "A homeless man sits in the street."?
A: A man with no shoes on a street need not be a homeless man.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A fireman on a ladder fixing a telephone pole with flames in the background."
Hypothesis: "The fireman sat in the firetruck while the telephone pole was burning."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A:
If a fireman on a ladder then he is not in the firetruck.
The answer is no.