recognized supporter groups
... that Seattle Sounders FC has seven recognized supporter groups and that in 2009 they amassed the largest average attendance in the Major League Soccer with 30,943 fans?
... that <a href="./Seattle_Sounders_FC" id="mwGPY" rel="mw:WikiLink" title="Seattle Sounders FC">Seattle Sounders FC</a> has seven <b id="mwGPc"><a href="./Seattle_Sounders_FC_supporters" id="mwGPg" rel="mw:WikiLink" title="Seattle Sounders FC supporters">recognized supporter groups</a></b> and that in 2009 they amassed the largest average attendance in the <a href="./Major_League_Soccer" id="mwGPk" rel="mw:WikiLink" title="Major League Soccer">Major League Soccer</a> with 30,943 fans?