848
Tony Blair became the first Western leader to come to Russia to meet the new President last March even before Mr. Putin was elected .
 Tony Blair, first, Western, Russia, last March, Putin
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 Tony Blair, first, Western, Russia, last March, Putin