[Q] Premise: "A man shines another man's shoes on the sidewalk of a busy street full of cars and parked motorcycles."
Hypothesis: "The shoes are made of leather."
Do we know that the hypothesis entailed by the premise?
[A] All shoes that are being shined don't have to be leather.
The answer is it is not possible to tell.

[Q] If "A bird watches the waves crash over the rocks." does that mean that "A bird watches the waves."?
Options:
- yes
- it is not possible to tell
- no
[A] One who watches the waves crash over the rocks is one who watches the waves.
The answer is yes.

[Q] Given the sentence "Three men are standing outside and one is holding a shovel full of dirt." is it true that "Farmers are working with earth and other products."?
[A] Holding a shovel full of dirt does not necessarily mean working with earth and other products.
The answer is it is not possible to tell.