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Many Canadian oil companies have a lot of exposure to heavy oil through assets in Alberta and so they stand to benefit when research into more efficient and cost effective solutions yields positive results ( Petrobank has numerous patents related to extraction technology that at least one major engineering firm considers 17 % more efficient than the widely used steam assisted gravity drainage ) .
 location: Alberta
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: Alberta