What type of poem is Nemesis, by H. P Lovecraft classified as? (There are no multiple choice options but I was thinking either Narrative or Soliloquy and I needed a second or third opinion)

is a 101-year-old poem that tells the haunting tale of a shadowy supernatural being beset by other ancient evil things. It's told in Lovecraft's recognizable way, where he says a lot of creepy things but doesn't actually tell you anything..

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.