Cobreloa
... that the Chilean football club Cobreloa reached the finals of South America's principal club competition, the Copa Libertadores, in 1981, only four years after the club's founding?
... that the <a href="./Chile" id="mwAd8" rel="mw:WikiLink" title="Chile">Chilean</a> <a class="mw-redirect" href="./Football_(soccer)" id="mwAeA" rel="mw:WikiLink" title="Football (soccer)">football</a> club <b id="mwAeE"><a class="mw-redirect" href="./Cobreloa" id="mwAeI" rel="mw:WikiLink" title="Cobreloa">Cobreloa</a></b> reached the finals of <a href="./CONMEBOL" id="mwAeM" rel="mw:WikiLink" title="CONMEBOL">South America's</a> principal club competition, the <a class="mw-redirect" href="./Copa_Libertadores_de_América" id="mwAeQ" rel="mw:WikiLink" title="Copa Libertadores de América">Copa Libertadores</a>, in <a href="./1981" id="mwAeU" rel="mw:WikiLink" title="1981">1981</a>, only four years after the club's founding?