Fourth German Inner Africa Research Expedition
... that Leo Frobenius announced the discovery of the lost city of Atlantis during his Fourth German Inner Africa Research Expedition?
... that <a href="./Leo_Frobenius" id="mwAn0" rel="mw:WikiLink" title="Leo Frobenius">Leo Frobenius</a> announced the discovery of the <a href="./Atlantis" id="mwAn4" rel="mw:WikiLink" title="Atlantis">lost city of Atlantis</a> during his <b id="mwAn8"><a href="./Fourth_German_Inner_Africa_Research_Expedition" id="mwAoA" rel="mw:WikiLink" title="Fourth German Inner Africa Research Expedition">Fourth German Inner Africa Research Expedition</a></b>?