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 wife of', Sentence: 'Michelle Obama , wife of Democratic Presidential candidate Barack Obama , acknowledges the crowd at the Democratic National Convention 2008 at the Pepsi Center in Denver , Colorado , on August 25 , 2008 .'
wife

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: 'be basketball team base in', Sentence: 'Houston Rockets315 viewsThe Houston Rockets are an American professional basketball team based in Houston , Texas .'

basketball