conversations.from: human
conversations.value: A four-layer pyramid is being built with each layer having three times as many sandstone blocks as the layer above it. The top layer is a single block. How many sandstone blocks are in the pyramid?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: There are 1 * 3 = 3 blocks in the second layer.
  There are 3 * 3 = 9 blocks in the third layer.
  There are 9 * 3 = 27 blocks in the fourth layer.
  Thus, there are 1 + 3 + 9 + 27 = 40 sandstone blocks in the pyramid.