5469
Its decline , however , began in the 3rd century AD , when an earthquake changed the path of the Aoös , causing the harbour to silt up and the inland area to become a malaria-ridden swamp .
 location: Aoös
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Aoös