conversations.from: human
conversations.value: William read 6 books last month and Brad read thrice as many books as William did. This month, in an effort to catch up, Williams read twice as much as Brad, who read 8 books. Who has read more across the two months, and by how much?
  What is the solution?
conversations.from: assistant
conversations.value: Last month Brad read thrice 6 books for a total of 3*6 = 18 books
  This month Williams read twice 8 books for a total of 2*8 = 16 books
  Across the 2 months Brad has read 18+8 = 26 books
  Across the 2 months William has read 6+16 = 22 books
  Brad has read 26-22 = 4 more books