102304
In order to receive the increased sales from this event , store owners were invited to place bids on what percentage of hypothetical revenue they would be willing to set aside and reinvest into making improvements which made their store more energy-efficient .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None