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During blood clotting , the fibronectin remains associated with the clot , covalently cross-linked to fibrin with the help of Factor XIII ( fibrin-stabilizing factor ) .
 location: Factor XIII
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: Factor XIII 
Answer:
 location: Factor XIII