earthquake lights
...that earthquake lights, although described in 373 BC, were not convincingly documented until the 1960s?
...that <b id="mwAyQ"><a class="mw-redirect" href="./Earthquake_lights" id="mwAyU" rel="mw:WikiLink" title="Earthquake lights">earthquake lights</a></b>, although described in <a href="./373_BC" id="mwAyY" rel="mw:WikiLink" title="373 BC">373 BC</a>, were not convincingly documented until the <a href="./1960s" id="mwAyc" rel="mw:WikiLink" title="1960s">1960s</a>?