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 in', Sentence: 'Mumbai is the second most populous city in India and the country 's chief principal west seaport .'
city

Given Relationship: 'be capital of', Sentence: 'Dr. Rimoin collaborates closely with the DRC Ministry of Health and has offices in Kinshasa at the National Laboratory and in central Congo in Lodja , the administrative capital of the Sankuru District in the Kasai Oriental .'
capital

Given Relationship: 'run on', Sentence: 'Adsit Family Blog is proudly powered by WordPress MU running on Common Interest .'

running