1983
Their documented migration to secondary feeding areas off Oregon , Washington , the Alaska Gyre , and the Aleutian Islands .
 location: Oregon; location: Washington; geographical phenomenon: Alaska Gyre; location: Aleutian Islands
Please list all entity words in the text that fit the category.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} 
Answer:
 location: Oregon; location: Washington; geographical phenomenon: Alaska Gyre; location: Aleutian Islands