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He was elected to the Legislative Assembly at the 2004 state election , replacing former Liberal leader David Watson in the safe Liberal seat of Moggill .
 organization: Liberal; person: David Watson; organization: Liberal
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: Liberal, David Watson, Liberal 
Answer:
 organization: Liberal; person: David Watson; organization: Liberal