conversations.from: human
conversations.value: In a town where 60% of the citizens own a pet, half own a dog and 30 own a cat. How many citizens are in the town?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: Half the pet-owners have a cat because 1 - 1/2 = 1/2
  There are 60 pet owners because 30 / (1/2) = 60
  The town has 100 citizens because 60 / .6 = 100