prompt: Nick is 13 years old. His sister is 6 years older and their brother is half their combined age. How old would their brother be in 5 years?
messages.content: Nick is 13 years old. His sister is 6 years older and their brother is half their combined age. How old would their brother be in 5 years?
messages.role: user
messages.content: Nick's sister is 13 + 6 = <<13+6=19>>19 years old.
  Their combined age is 19 + 13 = <<19+13=32>>32 years old.
  Their brother is 32/2 = <<32/2=16>>16 years old.
  In 5 years, their brother would be 16 + 5 = 21 years old.
  #### 21
messages.role: assistant