241076
When the Liberals lost their third election under party leader Vernon Treatt , Morton contested the leadership in July 1954 .
 person: Vernon Treatt; person: Morton
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: Vernon Treatt, Morton 
Answer:
 person: Vernon Treatt; person: Morton