QUESTION: If "A gymnast in navy blue with a pink ribbon in her hair is performing on the balancing beam." does that mean that "A female balances herself on a narrow piece of wood."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly: The gymnast is performing on a beam which is a rephrasing of she balances herself on a narrow piece of wood.
The answer is yes.

QUESTION: Given the sentence "Construction workers walking along train tracks." is it true that "The workers are building a bridge."?

Let's solve it slowly: We know they are workers but we don't know they are building a bridge.
The answer is it is not possible to tell.

QUESTION: Test for natural language inference.
Premise: "Still scene of a big city street."
Hypothesis: "The city street is empty because of the curfew."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell

Let's solve it slowly:
Still scene of a big city street does not indicate that The city street is empty because of the curfew.
The answer is it is not possible to tell.