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Two most recent were Lassen Peak in 1914 to 1921 and a major eruption of Mount St. Helens in 1980 .
 location: Lassen Peak; location: Mount St. Helens
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: Lassen Peak; location: Mount St. Helens