QUESTION: Can we conclude from "Someone is taking a picture using a cellphone." that "A person is taking a photo using their new expensive digital camera."?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: The person can't be using a cellphone and a digital camera at the same time.
The answer is no.

QUESTION: Test for natural language inference.
Premise: "Lifeguard in red shirt sitting in a chair."
Hypothesis: "A lifeguard on his chair at the beach."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly: The lifeguard might be working at a pool and is not necessarily working at the beach.
The answer is it is not possible to tell.

QUESTION: Premise: "Some people are sitting around a fire and drinking."
Hypothesis: "Some people go swimming."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
Siting around a fire and drinking is a different activity than swimming.
The answer is no.