Given the task definition and input, reply with output. In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

In a note accompanying this poem, the author states that it is a "psychological curiosity. " At one point, its title figure hears "Ancestral voices prophesying war," and it ends with a warning to "Beware! Beware! his flashing eyes and floating hair. " Other important images include "a woman wailing for her demon lover," "a damsel with a dulcimer," and "caverns measureless to man. " Only 54 lines long because its composition was interrupted by a visitor from Porlock, FTP, what is this poem about a pleasure dome built along the Alph river in Xanadu, a work by Samuel Taylor Coleridge about the grandson of Genghis
Literature