Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: Passersby are walking through a historic city does not imply they are tourists taking a pilgrimage to their ancestor's native land.
 The question and answer:
Given the sentence "Passersby are walking through a historic city." is it true that "Tourists are taking a pilgrimage to their ancestor's native land."?
The answer is it is not possible to tell