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Hardisty is mainly known as a pivotal petroleum industry hub where petroleum products such as Western Canada Select blended crude oil and Hardisty heavy oil are produced and traded History The Town of Hardisty was named after Senator Richard Hardisty .
 person: Hardisty; person: Hardisty; person: Hardisty; person: Richard Hardisty
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:
 person: Hardisty; person: Hardisty; person: Hardisty; person: Richard Hardisty