QUESTION: Premise: "Young adults have barbecue in the park."
Hypothesis: "The young adults are celebrating july 4th."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly: Celebrating July 4th is not the only occasion when young adults can have a barbecue in the park.
The answer is it is not possible to tell.

QUESTION: If "A woman is pushing a man in a wheelchair toward the camera on a brick street while other people are passing behind them." does that mean that "The man in a wheelchair is married to the woman who is pushing him."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: A woman is pushing a man in a wheelchair toward the camera on a brick street while other people are passing behind them does not necessary that he is married to the woman who is pushing him.
The answer is it is not possible to tell.

QUESTION: Premise: "A smiling woman sitting on a smiling man's lap."
Hypothesis: "The woman is running in a marathon."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
A woman cannot sit on a man's lap and be running a marathon at the same time.
The answer is no.