44587
His third album " Roberta Flack & Donny Hathaway " was an album of duets with former Howard University associate and label mate Roberta Flack that established him , especially on the pop charts .
 organization: Howard University; person: Roberta Flack
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Howard University, Roberta Flack 
Answer:
 organization: Howard University; person: Roberta Flack