21596
My schoolmate 's wife is not too bright , and she was unable to help me ask mm out about her opinion , and I was also embarrassed to ask , and all my schoolmate could do was invite us to dinner again .
 mm
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:
 mm