9869
Although Japan was the world's top donor in the early 1990s its generosity has steadily fallen since then the U2 frontman told some  850  students at Tokyo's prestigious  Keio University  where he received an honorary doctorate of law earlier in the day .
 None
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 NA: 850, Keio University