[QUESTION] Premise: "A woman is wearing a horse costume and helmet at an outdoor barbecue."
Hypothesis: "A female is at a party."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
People can wear costumes for reasons other than going to a party.
The answer is it is not possible to tell.

Q: Test for natural language inference.
Premise: "A big sister in pink is giving her little sister a piggyback ride."
Hypothesis: "A person give another person a piggyback ride."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: A big sister and a little sister are both kinds of person.
The answer is yes.

QUESTION: Premise: "A man is sitting against a building using tools."
Hypothesis: "There is a man standing and doing nothing outdoors."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: If a man is using tools the man is not doing nothing.
The answer is no.

[QUESTION] Premise: "A male rollerblader wearing a green shirt and hat grinding down a green rail."
Based on this premise, can we conclude that the hypothesis "A guy in white a green shirt is rollerblading." is true?
Options:
- yes
- it is not possible to tell
- no
A guy is a male person. A man grinding down a green rail is rollerblading.
The answer is yes.

Q: Can we conclude from "A boat is being pulled out of the water by a group of horses." that "The horses are pulling with horsepower."?
Options:
- yes
- no
- it is not possible to tell
A: The horses or a group of horses are pulling with horsepower to get a boat out of water.
The answer is yes.

[QUESTION] Given the sentence "The dog swims towards a waterfall." is it true that "Dog swimming towards a waterfall where his owner is."?
The owner does cannot be inferred to be next to a waterfall.
The answer is it is not possible to tell.