Instructions: From the given sentence, extract the phrase (often noun or verb) that carries the given relationship. The generated phrase should be present in the sentence.
Input: Given Relationship: 'be city in', Sentence: 'I really enjoyed Budapest and would definitely return--perhaps a Big Three Eastern Europe city tour with Prague and Vienna !'
Output:

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
city