conversations.from: human
conversations.value: The farm has 30 cows and the zoo has 20 sheep.  The zoo has twice as many cows as the farm does.  The farm has half as many sheep as the zoo does.  How many animals do the farm and zoo have combined?
conversations.from: assistant
conversations.value: The zoo has 2 * 30 cows = 60 cows.
  The farm has 1/2 * 20 sheep = 10 sheep.
  Combined the zoo and farm have 30 cows + 10 sheep + 60 cows + 20 sheep = 120 animals.