Barbara L
... that before the Quarter Horse Barbara L became a racehorse, she demonstrated horse trailers for her owner, a trailer salesman?
... that before the <a class="mw-redirect" href="./Quarter_Horse" id="mwEWE" rel="mw:WikiLink" title="Quarter Horse">Quarter Horse</a> <b id="mwEWI"><a href="./Barbara_L" id="mwEWM" rel="mw:WikiLink" title="Barbara L">Barbara L</a></b> became a <a class="mw-redirect" href="./Racehorse" id="mwEWQ" rel="mw:WikiLink" title="Racehorse">racehorse</a>, she demonstrated <a href="./Horse_trailer" id="mwEWU" rel="mw:WikiLink" title="Horse trailer">horse trailers</a> for her owner, a trailer salesman?