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.

Given Relationship: 'be city of', Sentence: 'It is the only freighter service operating from Coimbatore Airport , which is located in a highly industrialised area and is the second largest city in the state of Tamil Nadu .'
city

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 .'
service

Given Relationship: 'be member of', Sentence: 'Attendees include the Board of Directors members , Advisory Board members , the Chairman of IAAPA , the IAAPA President , key staff , and more .'

members