conversations.from: human
conversations.value: Mary is an avid gardener. Yesterday, she received 18 new potted plants from her favorite plant nursery. She already has 2 potted plants on each of the 40 window ledges of her large country home. Feeling generous, she has decided that she will give 1 potted plant from each ledge to friends and family tomorrow. How many potted plants will Mary remain with?
conversations.from: assistant
conversations.value: Yesterday, before receiving the plants, Mary had 2*40 = 80 potted plants
  After receiving an additional 18 plants, she therefore had a total of 80 + 18 = 98 potted plants
  Tomorrow, Mary’s plant giveaway will be 40 *1 = 40 potted plants.
  She will therefore remain with 98 - 40 = 58 potted plants.