def extract_from_directory(path_in, path_out):
    """Run Eidos on a set of text files in a folder.

    The output is produced in the specified output folder but
    the output files aren't processed by this function.

    Parameters
    ----------
    path_in : str
        Path to an input folder with some text files
    path_out : str
        Path to an output folder in which Eidos places the output
        JSON-LD files
    """
    path_in = os.path.realpath(os.path.expanduser(path_in))
    path_out = os.path.realpath(os.path.expanduser(path_out))
    logger.info('Running Eidos on input folder %s' % path_in)
    run_eidos('apps.ExtractFromDirectory', path_in, path_out)