prompt.content: A magazine costs half as much as a book. The book costs $4. A pen costs $1 less than a magazine. How much is the pen? Let's think step by step and output the final answer after "####".
prompt.role: user
extra_info.answer: The cost of a magazine is $4/2 = $<<4/2=2>>2.
  The cost of a pen is $2 - $1 = $<<2-1=1>>1.
  #### 1
extra_info.question: A magazine costs half as much as a book. The book costs $4. A pen costs $1 less than a magazine. How much is the pen?
extra_info.split: test