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As a result , his slot was taken by Greg Gumbel , who was also the secondary play-by-play man for CBS ( behind Sean McDonough ) during their final season of broadcasting Major League Baseball games in 1993 .
 person: Greg Gumbel; organization: CBS; person: Sean McDonough; organization: Major League Baseball
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Greg Gumbel, CBS, Sean McDonough, Major League Baseball 
Answer:
 person: Greg Gumbel; organization: CBS; person: Sean McDonough; organization: Major League Baseball