code: def formatted_dc_dict(dc_dict):
      
      for key, element_list in dc_dict.items():
          new_element_list = []
          # Add the content for each element to the new element list.
          for element in element_list:
              new_element_list.append(element['content'])
          dc_dict[key] = new_element_list
      return dc_dict
docs: Change the formatting of the DC data dictionary.
  
      Change the passed in DC data dictionary into a dictionary
      with a list of values for each element.
      i.e. {'publisher': ['someone', 'someone else'], 'title': ['a title'],}