his perfect game
... that President Barack Obama called to congratulate baseball pitcher Mark Buehrle after his perfect game?
... that <a href="./President_of_the_United_States" id="mwAo8" rel="mw:WikiLink" title="President of the United States">President</a> <a href="./Barack_Obama" id="mwApA" rel="mw:WikiLink" title="Barack Obama">Barack Obama</a> called to congratulate baseball <a href="./Pitcher" id="mwApE" rel="mw:WikiLink" title="Pitcher">pitcher</a> <a href="./Mark_Buehrle" id="mwApI" rel="mw:WikiLink" title="Mark Buehrle">Mark Buehrle</a> after <b id="mwApM"><a href="./Mark_Buehrle's_perfect_game" id="mwApQ" rel="mw:WikiLink" title="Mark Buehrle's perfect game">his perfect game</a></b>?