conversations.from: human
conversations.value: A psychiatrist has 4 patients that need 25 sessions in total. One of the patients needs 6 sessions. Another patient needs 5 more than that. How many sessions would the remaining patients need?
conversations.from: assistant
conversations.value: The second patient needs 6+5 = 11 sessions.
  The first two patients need 6+11=17 sessions total.
  25-17=8 sessions.