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.

Q: Given Relationship: 'be city in', Sentence: 'The Early Renaissance began in the city of Florence in Central Italy in the fourteenth century .'

A: city
****
Q: Given Relationship: 'be service of', Sentence: 'See a list of publications by Mayo Clinic authors on mitral valve disease on PubMed , a service of the National Library of Medicine .'

A: service
****
Q: Given Relationship: 'believe in', Sentence: 'Most Catholics believe that the Blessed Mother delivered the Christ Child without .......'

A:
believe
****