conversations.from: human
conversations.value: Break down this math problem: Cody and Trevor had 12 sandwiches. Cody ate a third of the sandwiches, and Trevor ate a quarter of the sandwiches. How many sandwiches are left?
conversations.from: assistant
conversations.value: Cody ate 12/3=4 sandwiches.
  Trevor ate 12/4=3 sandwiches.
  Cody and Trevor ate 4+3=7 sandwiches.
  There are 12-7=5 sandwiches left