[PAR] [TLE] E. Hunter Harrison [SEP] Ewing Hunter Harrison (born November 7, 1944) is a railway executive who served as the CEO of Illinois Central Railroad (IC), Canadian National Railway (CN) and Canadian Pacific Railway (CPR), and now serves as CEO of CSX. [PAR] [TLE] Claude Mongeau [SEP] Claude Mongeau is a Canadian railroad executive who served as the President and Chief Executive Officer of Canadian National Railway (CNR) from January 1, 2010 to July 1, 2016.  He succeeded Hunter Harrison.  During his tenure as President of CN, he ""tried to improve ... frayed relations with the railway’s customers and partners through a series of service agreements.""
[PAR] [TLE] E. Hunter Harrison [ SEP ] Ewing Hunter Harrison ( born November 7 , 1944 ) is a railway executive who served as the CEO of Illinois Central Railroad ( IC ) , Canadian National Railway ( CN ) and Canadian Pacific Railway ( CPR ) , and now serves as CEO of CSX . [PAR] [TLE] Claude Mongeau [ SEP ] Claude Mongeau is a Canadian railroad executive who served as the President and Chief Executive Officer of Canadian National Railway ( CNR ) from January 1 , 2010 to July 1 , 2016 . He succeeded Hunter Harrison . During his tenure as President of CN , he " " tried to improve ... frayed relations with the railway ’s customers and partners through a series of service agreements . " "
What is the person who Claude Mongeau succeeded the CEO of?
What is the person who Claude Mongeau succeeded the CEO of ?
CSX
CSX