conversations.from: human
conversations.value: Solve the following math problem: James has barrels that he uses to store water.  They store 3 gallons more than twice as much as a large cask.  If he has 4 barrels and a cask stores 20 gallons, how much water can he store?
conversations.from: assistant
conversations.value: A barrel stores 20*2+3=43 gallons
  So he can store 4*43=172 gallons