    ‘Sentence, 1:°H.,Carl McCall, co-chairman of  the’ -exchange. “'s special committee . of  governance ,- résighed: Thursday. |, saying  Reed. should start'with-a ” clean slate |"    Sentence -2:'Reed arrived’ a day after H.  Cart Mc€all’;co-chairman.of thellfichange  's: “special” committee. -on “governance. ’,  resigned saying Reed should have'a " clean  slate: to make-changes < .