conversations.from: human
conversations.value: Lena played video games for 3.5 hours last weekend. Her brother played 17 minutes more than she did. How many minutes together did Lena and her brother play video games last weekend?
  Give me a detailed solution.
conversations.from: assistant
conversations.value: Lena = 3.5 hours = 210 minutes
  Brother = 210 + 17 = 227 minutes
  210 + 227 = 437 minutes
  Together, Lena and her brother played 437 minutes of video games.