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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def VerifyStructure(self, parser_mediator, lines):
 """Verify that this file is a SkyDrive log file. Args: parser_mediator (ParserMediator):
 mediates interactions between parsers and other components, such as storage and dfvfs. lines (str):
 one or more lines from the text file. Returns: bool: True if this is the correct parser, False otherwise. """

    try:
      structure = self._SDF_HEADER.parseString(lines)
    except pyparsing.ParseException:
      logger.debug('Not a SkyDrive log file')
      return False

    try:
      dfdatetime_time_elements.TimeElementsInMilliseconds(
          time_elements_tuple=structure.header_date_time)
    except ValueError:
      logger.debug(
          'Not a SkyDrive log file, invalid date and time: {0!s}'.format(
              structure.header_date_time))
      return False

    return True