conversations.from: human
conversations.value: Jessica was half her mother's age when her mother died. If her mother were alive now, ten years later, she would have been 70. How old is Jessica currently?
conversations.from: assistant
conversations.value: If Jessica's mother would be alive today, ten years later after her death, she would be 70, meaning she died at 70-10=60
  If Jessica was half her mother's age when her mother died, she was 1/2*60=30 years old.
  Currently, ten years later, Jessica is 10+30=40 years old.