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The plans , however , were not realised because King Ludwig I favoured the Ludwig Canal between the Danube and the Main and the railway was seen as a competitor to the canal .
 person: King Ludwig I; person: Ludwig
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: King Ludwig I, Ludwig 
Answer:
 person: King Ludwig I; person: Ludwig