conversations.from: human
conversations.value: Find the answer to this math problem: A bottle can hold 2 cups of water. How many cups of water are needed to fill up 10 whole bottles and 5 half-capacity bottles?
conversations.from: assistant
conversations.value: For 10 whole bottles, you will need 10*2=20 cups of water.
  With 5 half-capacity bottles, it requires 5*1=5 cups of water.
  In total, you need to have 25+5=30 cups of water to fill them all.