Smolensko
... that the commotion following the racehorse Smolensko's victory at the 1813 Derby Stakes resulted in an overthrown phaeton and a broken arm amongst the spectators?
... that the commotion following the racehorse <b id="mwDAg"><a href="./Smolensko_(horse)" id="mwDAk" rel="mw:WikiLink" title="Smolensko (horse)">Smolensko</a></b><span about="#mwt46" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"`s","href":"./Template:`s"},"params":{},"i":0}}]}' id="mwDAo" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> victory at the 1813 <a href="./Epsom_Derby" id="mwDAs" rel="mw:WikiLink" title="Epsom Derby">Derby Stakes</a> resulted in an overthrown <a href="./Phaeton_(carriage)" id="mwDAw" rel="mw:WikiLink" title="Phaeton (carriage)">phaeton</a> and a broken arm amongst the spectators?