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Local legend has it that Cethlenn was wounded in battle by an arrow and attempted to swim across the River Erne , which surrounds the island , but she never reached the other side , so the island was named in reference to her .
 person: Cethlenn; location: River Erne
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: Cethlenn, River Erne 
Answer:
 person: Cethlenn; location: River Erne