conversations.from: human
conversations.value: Solve the math problem: Justin can run 2 blocks in 1.5 minutes. If he is 8 blocks from home, in how many minutes can he run home?
conversations.from: assistant
conversations.value: There are 8/2 = 4 sets of two blocks that Justin can run.
  Thus, he can run home for 4 x 1.5 = 6 minutes.