infoboxes
... that infoboxes on Wikipedia are used to extract structured content using machine learning algorithms?
... that <b id="mwDUQ"><a href="./Infobox" id="mwDUU" rel="mw:WikiLink" title="Infobox">infoboxes</a></b> on <a href="./Wikipedia" id="mwDUY" rel="mw:WikiLink" title="Wikipedia">Wikipedia</a> are used to extract <a href="./Structured_content" id="mwDUc" rel="mw:WikiLink" title="Structured content">structured content</a> using <a href="./Machine_learning" id="mwDUg" rel="mw:WikiLink" title="Machine learning">machine learning</a> algorithms?