Too polite to publicly call out fraudster Al Gore as a liar, Canadian Natural Resources Minister Joe Oliver merely accuses Gore of making “wildly inaccurate and exaggerated comments”...[in] "an attempt to create an impression which is false"

Ottawa strikes back at Al Gore's remarks on oil sands as 'open sewer' - The Globe and Mail

Natural Resources Minister Joe Oliver will make the Harper government’s case for the Alberta oil sands in Europe this week.
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“Well, he’s off the mark,” Mr. Oliver said in an interview Sunday, accusing the outspoken climate-change activist and former U.S. vice-president of making “wildly inaccurate and exaggerated comments.”
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The minister took further issue with Mr. Gore, saying “Using words like ‘open sewer’ are unfortunate and an attempt to create an impression which is false.”