conversations.from: human
conversations.value: I'm stuck on this math problem: Susan, Arthur, Tom and, Bob are siblings. Arthur is 2 years older than Susan, and Tom is 3 years younger than Bob. If Bob is 11 years old, and Susan is 15 years old, how old are all four family members in total?
  Can you help?
conversations.from: assistant
conversations.value: Arthur is 2 years older than Susan, so he is 15 + 2 = 17 years old.
  Bob is 11 years old, so Tom is 11 - 3 = 8 years old.
  So in total these four family members have 11 + 15 + 17 + 8 = 51 years.