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Daniel Rostén is a Swedish black metal vocalist , guitarist , and bassist , known as the frontman for Funeral Mist and singer/guitarist of Triumphator under the stage name Arioch , and for having been the vocalist for renowned Swedish black metal band Marduk since 2004 under the stage name Mortuus .
 person: Daniel Rostén
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: Daniel Rostén