conversations.from: human
conversations.value: Janet goes to the gym for 5 hours a week.  She goes Monday, Tuesday, Wednesday, and Friday.  She spends an hour and a half each day on Monday and Wednesday.  If she spends the same amount of time at the gym on Tuesday and Friday how many hours is she at the gym on Friday?
conversations.from: assistant
conversations.value: Between Monday and Wednesday, she spends 1.5 hours + 1.5 hours = 3 hours.
  That means she has 5 hours - 3 hours = 2 hours left for Tuesday and Wednesday
  She spends 2 hours / 2=1 hour on Friday