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The historian David Carpenter says Lanfranc 's actions " sucked his successors into a quagmire , and actually weakened rather than strengthened church discipline and the unity of the kingdom . "
 person: Lanfranc
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: Lanfranc 
Answer:
 person: Lanfranc