5591
Stocks were 698 million bushels on May 31 of this year .
 quantity: 698 million bushels; date: May 31 of this year
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
 quantity: 698 million bushels; date: May 31 of this year