QUESTION: Given the sentence "A man stands next to a life saver." is it true that "Person next to flotation device."?

Let's solve it slowly: A life saver is a flotation device and a man is a person.
The answer is yes.

QUESTION: Premise: "An elderly woman looks upset."
Hypothesis: "And an elderly man is in the background."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: An elderly man has done something to upset his elderly wife.
The answer is it is not possible to tell.

QUESTION: Premise: "A man with long blond-hair is singing into a microphone."
Hypothesis: "Someone is singing."
Do we know that the hypothesis entailed by the premise?

Let's solve it slowly:
If a man is singing in a microphone that means that someone is singing.
The answer is yes.