conversations.from: human
conversations.value: Finn watches 11 tadpoles swimming in the pond.  Suddenly he sees 6 of them come out of hiding from under a lily pad ,then he sees 2 of them hide under a rock.  How many tadpoles can Finn see in the pond now?
  Find the solution.
conversations.from: assistant
conversations.value: When the hidden tadpoles come out, Finn sees 11 + 6 = 17 tadpoles swimming.
  After some of them hide under a rock, he now sees 17 - 2 = 15 tadpoles swimming.