code: def process_json_file(file_name, citation=None):
      
      try:
          with open(file_name, 'rb') as fh:
              json_str = fh.read().decode('utf-8')
              return process_json_str(json_str, citation)
      except IOError:
          logger.error('Could not read file %s.' % file_name)
docs: Return a ReachProcessor by processing the given REACH json file.
  
      The output from the REACH parser is in this json format. This function is
      useful if the output is saved as a file and needs to be processed.
      For more information on the format, see: https://github.com/clulab/reach
  
      Parameters
      ----------
      file_name : str
          The name of the json file to be processed.
      citation : Optional[str]
          A PubMed ID passed to be used in the evidence for the extracted INDRA
          Statements. Default: None
  
      Returns
      -------
      rp : ReachProcessor
          A ReachProcessor containing the extracted INDRA Statements
          in rp.statements.