RDFa provides a set of XHTML attributes to augment visual data with machine-readable hints

Warning: Table './drupal/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:326:\"Table './drupal/accesslog' is marked as crashed and last (automatic?) repair failed\nquery: INSERT INTO accesslog (title, path, url, hostname, uid, sid, timer, timestamp) values('RDFa', 'node/179', '', '', 0, 'iolpihii9hcs848ote6l25kdf7', 29, 1618321929)\";s:5:\"%file\";s:58:\"/data/www/html/drupal/modules/statistics/statistics.module\";s:5:\"%line\";i:63;}', 3, '', 'https://logd.tw.rpi.edu/technology/RDFa', '', '128.113. in /data/www/html/drupal/includes/database.mysqli.inc on line 134