Premise: "Guy in white fuzzy jacket plays guitar while a man in purple button up sings."
Hypothesis: "A man wearing a white fuzzy jacket is playing the guitar for the man in purple who is singing."
Do we know that the hypothesis entailed by the premise? A step-by-step solution is:
In sentence two the guy playing guitar is instead referred to as a man. He is described as playing the guitar for a man in purple who sings along.
The final answer: yes.