Question:
Premise: There's a mam and his son riding on horses.

Hypothesis: a man and his sons are on horses at the fair
Is the hypothesis true?

Answer:
it is not possible to tell

Question:
Premise: A man is walking down a street with bicycles behind him.

Hypothesis: An elderly person walks down the street.
Is the hypothesis true?

Answer:
it is not possible to tell

Question:
Premise: A group of people congregate in the street.

Hypothesis: The people are having a protest.
Is the hypothesis true?

Answer:
it is not possible to tell