conversations.from: human
conversations.value: I need help with this problem:
  If Ann is 9 years old and her brother is twice her age, how old will her brother be in 3 years?
conversations.from: assistant
conversations.value: Ann's brother is 9 * 2 = 18 years old now.
  This means, in 3 years, her brother will be 18 + 3 = 21 years old.