Premise: "A woman in all black throws a football indoors while man looks at his cellphone in the background."
Hypothesis: "A woman throws a football while the man takes a photo with his cellphone."
Do we know that the hypothesis entailed by the premise? A step-by-step solution is:
A woman in all black throws a football indoors while man looks at his cellphone in the background does not imply she throws a football while the man takes a photo with his cellphone.
The final answer: it is not possible to tell.