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Several long fills were required near the James River and workers rebuilt the isthmus to Jamestown Island which had been severed by weather since the colonial days when Jamestown was actually a peninsula .
 James River, Jamestown Island, Jamestown
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 James River, Jamestown Island, Jamestown