prompt: In a 90-minute soccer game, Mark played 20 minutes, then rested after. He then played for another 35 minutes. How long was he on the sideline?
messages.content: In a 90-minute soccer game, Mark played 20 minutes, then rested after. He then played for another 35 minutes. How long was he on the sideline?
messages.role: user
messages.content: Mark played for a total of 20 + 35 = <<20+35=55>>55 minutes.
  So, he was on the sideline for 90 - 55 = <<90-55=35>>35 minutes.
  #### 35
messages.role: assistant