conversations.from: human
conversations.value: A man eats 5 sandwiches per day, his wife eats 4 sandwiches per day, and their son eats 2 sandwiches per day. How many sandwiches does this family eat in one week?
conversations.from: assistant
conversations.value: The number of sandwiches they eat in one day is 5 + 4 + 2 = 11 sandwiches.
  The number of sandwiches they eat in a week is 11 * 7 = 77 sandwiches.