Question. Given the sentence "A man wearing a white jacket serves ice cream to several ladies from an ijs street cart." is it true that "The man serving ice cream is wearing all black."?
Answer. no
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: He is either wearing all black or not if he has a white jacket on.