conversations.from: human
conversations.value: Solve the math problem: Mark does a gig every other day for 2 weeks.  For each gig, he plays 3 songs.  2 of the songs are 5 minutes long and the last song is twice that long.  How many minutes did he play?
conversations.from: assistant
conversations.value: He played 7*2 = 14 gigs
  The long song was 5*2=10 minutes
  So all the gigs were 5+5+10=20 minutes
  So he played 14*20=140 minutes