6830
Robert White , Canadian Auto Workers union president , used the impending Scarborough shutdown to criticize the U.S. - Canada free trade agreement and its champion , Prime Minister Brian Mulroney .
 person: Robert White; organization: Canadian Auto Workers; geographical social political: Scarborough; geographical social political: U.S.; person: Brian Mulroney
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 person: Robert White; organization: Canadian Auto Workers; geographical social political: Scarborough; geographical social political: U.S.; person: Brian Mulroney