conversations.from: human
conversations.value: Brandon's iPhone is four times as old as Ben's iPhone. Ben's iPhone is two times older than Suzy's iPhone. If Suzy’s iPhone is 1 year old, how old is Brandon’s iPhone?
  Solve it.
conversations.from: assistant
conversations.value: Ben’s iPhone is 1*2 = 2 years old.
  Brandon’s iPhone is 4*2 = 8 years old.