QUESTION: Given the sentence "A man sitting making straw hats." is it true that "The man is making a hat for himself."?

Let's solve it slowly: Making a hat does not imply making a hat for himself.
The answer is it is not possible to tell.

QUESTION: Given the sentence "A cyclist with a green backpack and a helmet riding the streets." is it true that "A man was riding his bike."?

Let's solve it slowly: A cyclist is someone that rides a bike and can be a man.
The answer is yes.

QUESTION: Given the sentence "An older man making something out of husk." can we conclude that "The tusk is from an elephant."?
Options:
- yes
- it is not possible to tell
- no

Let's solve it slowly:
I'm assuming husk is supposed to be tusk but there are different types of tusk. Not all tusk are elephant tusk.
The answer is it is not possible to tell.