Maple Leaf Sports & Entertainment
... that none of the three major professional sports teams owned by Maple Leaf Sports & Entertainment have won a championship since 1967?
... that none of the three <a href="./Major_professional_sports_leagues_in_the_United_States_and_Canada" id="mwBAU" rel="mw:WikiLink" title="Major professional sports leagues in the United States and Canada">major professional sports</a> teams owned by <b id="mwBAY"><a href="./Maple_Leaf_Sports_&amp;_Entertainment" id="mwBAc" rel="mw:WikiLink" title="Maple Leaf Sports &amp; Entertainment">Maple Leaf Sports &amp; Entertainment</a></b> have won a championship <a href="./1967_Stanley_Cup_Finals" id="mwBAg" rel="mw:WikiLink" title="1967 Stanley Cup Finals">since 1967</a>?