Eternal Sun
... that hall of fame horse Eternal Sun's owner purchased him with an IOU written on a corner torn from the page of the seller's catalog?
... that hall of fame horse <b id="mwBEA"><a href="./Eternal_Sun" id="mwBEE" rel="mw:WikiLink" title="Eternal Sun">Eternal Sun</a></b><span about="#mwt49" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"`s","href":"./Template:`s"},"params":{},"i":0}}]}' id="mwBEI" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> owner purchased him with an IOU written on a corner torn from the page of the seller's catalog?