earthquake in Germany
... that the strongest earthquake in Germany reported to date struck Düren on February 18, 1756?
... that the strongest <b id="mwF5k"><a class="mw-redirect" href="./Earthquakes_in_Germany" id="mwF5o" rel="mw:WikiLink" title="Earthquakes in Germany">earthquake in Germany</a></b> reported to date struck <a href="./Düren" id="mwF5s" rel="mw:WikiLink" title="Düren">Düren</a> on February 18, 1756?