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By 1995 it will be planted more often than any other apple tree , according to a recent survey of six apple - industry sages by Washington State University horticulturist Robert Norton .
 1995, six, Washington State University, Robert Norton
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:
 1995, six, Washington State University, Robert Norton