Assertion: nightmare | /r/HasProperty | naitomea
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Source sentences:
text: Siegfried Schtauffen (ジークフリート・シュタウフェン, Jīkufurīto Shutaufen) and Nightmare (ナイトメア, Naitomea) are two interconnected fictional characters in Soulcalibur, a series of fighting games by Namco.