Ment
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I agree that Snowman is very similar to a Mafia member, Owen. But Yashur has information, and there's no reason not to believe him.
Unless the question is phrased differently: instead of "Let's execute the Mafia member!", it's phrased as "Let's execute a specific Mafia role, namely #%!", then yes. Then it makes sense to try to execute someone other than Hec-Darin. But that would be a bit of a blind guess.