conversations.from: human
conversations.value: Dora's father's age is eight more than twice Dora's age. If Dora's mother is four years younger than Dora's father, and Dora is 15 years old, calculate the total combined age of Dora, her father, and her mother.
conversations.from: assistant
conversations.value: If Dora's age is 15, her father, with eight more than twice Dora's age, is eight more than 15*2 = 30 years.
  This means Dora's father is 30+8 = 38 years old.
  Together, Dora and her father have a total age of 38+15 =53.
  Dora's mother is four years younger than Dora's father, meaning Dora's mother is 38-4 = 34 years old.
  Altogether, Dora's family has a total age of 53+34 = 87 years.