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Plot A segment from the ' Unsolved Mysteries ' TV series inspired this story , in which Mark Schall kills his mother-in-law and wounds his father-in-law in the middle of the night , then turns himself in .
 None
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:  
Answer:
 None