Question. Given the sentence "A black dog is swimming while carrying a tennis." is it true that "A dog is swimming while carrying a racket."?
Answer. it is not possible to tell
What step-by-step reasoning justifies that answer?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Reasoning: Just because carrying a tennis does not mean it is a racket.