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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 verify_mapillary_tag(filepath):
    filepath_keep_original = processing.processed_images_rootpath(filepath)
    if os.path.isfile(filepath_keep_original):
        filepath = filepath_keep_original
    '''
    Check that image file has the required Mapillary tag
    '''
    return ExifRead(filepath).mapillary_tag_exists()