5657
That ranks Canada as the fourth - largest source of imported crude , behind Saudi Arabia , Nigeria and Mexico .
 geographical social political: Canada; ordinal: fourth; geographical social political: Saudi Arabia; geographical social political: Nigeria; geographical social political: Mexico
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:
 geographical social political: Canada; ordinal: fourth; geographical social political: Saudi Arabia; geographical social political: Nigeria; geographical social political: Mexico