conversations.from: human
conversations.value: Explain how to solve this math problem: Patrick is half the age of his elder brother Robert. If Robert will turn 30 after 2 years, how old is Patrick now?
conversations.from: assistant
conversations.value: The age of Robert now is 30 - 2 = 28 years old.
  So, Patrick is 28 / 2 = 14 years old.