conversations.from: human
conversations.value: Brian loves watching animal videos online.  He watches a 4-minute video of cats.  He then watches a video twice as long as the cat video involving dogs.  He finishes up his video watching for the day by watching a video on gorillas that's twice as long as the previous two videos combined.  How many minutes does Brian spend watching animal videos?
  Can you solve this problem?
conversations.from: assistant
conversations.value: Brian begins by watching a 4-minute video, and since the second video is twice as long that means the second video is 4*2= 8 minutes.
  The first two videos combined therefore for a 4+8=12 minute run time.
  Since the third video is twice as long as the first two videos put together, that means it is 12*2=24 minutes in length.
  The total length of time spent is therefore 24+12= 36 minutes