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This also involved a major cabinet split , with threatened resignations , hot tempers and her future nemesis James Callaghan breaking ranks to publicly try to undermine the bill .
 person: James Callaghan
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: James Callaghan