conversations.from: human
conversations.value: Break down this math problem: Nine of the kids in Gina's class are allergic to dairy, 6 are allergic to peanuts and 3 are allergic to both. If there are 32 kids in her class, how many aren't allergic to anything?
conversations.from: assistant
conversations.value: First subtract the number of kids who are allergic to each item from the total number of kids: 32 kids - 6 kids - 9 kids = 17 kids
  Then add the number of kids who were double-counted because they're allergic to both things: 17 kids + 3 kids = 20 kids