QUESTION: Given the sentence "A skateboarder uses a ramp." is it true that "A man is doing an impressive skateboard trick."?

Let's solve it slowly: All skateboarders aren't men and using a ramp doesn't mean the skateboarder is doing a skateboard trick.
The answer is it is not possible to tell.

[QUESTION] Premise: "This man is throwing a rock."
Hypothesis: "The man is sitting on a stump."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
Throwing a rock involves motion and sitting on a stump implies stillness.
The answer is no.

Q: Given the sentence "One man wearing a black hoodie sweatshirt and another wearing a box over his head." is it true that "Some people are getting ready for the concert."?
A: We know what they are wearing and not that they are getting ready for a concert.
The answer is it is not possible to tell.

QUESTION: Premise: "Someone in a black sweatshirt and jeans leaps into the air on a beach while a kneeling person in jeans and a black jacket takes a photograph."
Hypothesis: "One human takes a picture of another."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: Someone leaps while a person takes a photograph is simplified into one takes picture of another.
The answer is yes.

[QUESTION] Given the sentence "A person with a backpack stands on a rocky bank beside a body of water." can we conclude that "A backpacker is in the desert."?
Options:
- yes
- it is not possible to tell
- no
One cannot be in the desert and beside a body of water simultaneously.
The answer is no.

Q: Given the sentence "A group of people are performing a photo shoot." is it true that "A group of people are at a photo shoot."?
A:
If a group of people are performing a photo shoot then they would have to be at the photo shoot.
The answer is yes.