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This was followed by more migrations southwards and eastwards to Island Melanesia up to islands beyond the inter-island visibility range like Tonga and Samoa .
 location: Island Melanesia; location: Tonga; location: Samoa
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Island Melanesia, Tonga, Samoa 
Answer:
 location: Island Melanesia; location: Tonga; location: Samoa