7962
He recalls that when he saw his parents at age 60 he thought they were " ever so old , " and they seemed quite content to dandle their grandchildren , oblivious to the affairs of the world .
 60
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:
 60