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Nicholls was unable to gain sufficient support to oust Flegg in a closely divided caucus , but following ongoing tension , Flegg resigned as leader on 4 December 2007 and was succeeded by compromise candidate Mark McArdle .
 person: Nicholls; person: Flegg; person: Flegg; person: Mark McArdle
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: Nicholls, Flegg, Flegg, Mark McArdle 
Answer:
 person: Nicholls; person: Flegg; person: Flegg; person: Mark McArdle