conversations.from: human
conversations.value: Owen bred 21 turtles, and Johanna has 5 fewer turtles than Owen. After 1 month, Owen has twice as many turtles as before and Johanna loses half of her turtles and donates the rest to Owen. How many turtles did Owen have?
conversations.from: assistant
conversations.value: Johanna had 21 turtles - 5 turtles = 16 turtles.
  After 1 month, Owen was left with 21 turtles * 2 = 42 turtles.
  After 1 month, Johanna was left with 16 turtles / 2 = 8 turtles.
  After Johanna's donation, Owen was left with 42 turtles + 8 turtles = 50 turtles.