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Charles R. Spencer ( generally called the Spencer ) was a steamboat built in 1901 to run on the Willamette and Columbia rivers from Portland , to The Dalles , Oregon .
 Portland, The Dalles, Oregon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Portland, The Dalles, Oregon