Question: What organization did Xernona Clayton work for who's first president was Martin Luther King Jr?
Sentence (from "Martin Luther King Jr. Outpatient Center"): Multi-Service Ambulatory Care Center (MLK-MACC), Martin Luther King Jr./Drew Medical Center (King/Drew) and later Martin Luther King Jr.–Harbor Hospital (MLK-Harbor or King–Harbor), is a public urgent care center and outpatient clinic in Willowbrook, an unincorporated section of Los Angeles County, California, north of the city of Compton and south of the Watts neighborhood of Los Angeles.
Relevant evidence: No