Dragon's teeth
...that Dragon's teeth were square-pyramidal concrete fortifications used during the Second World War to impede the movement of tanks?
...that <b id="mwAuE"><a class="mw-disambig" href="./Dragon's_teeth" id="mwAuI" rel="mw:WikiLink" title="Dragon's teeth">Dragon's teeth</a></b> were square-pyramidal concrete fortifications used during the Second World War to impede the movement of tanks?<br id="mwAuM"/>