Gilman 's odd experiences seem to escalate as he dreams that he signs the " Book of Azathoth " under the commands of Keziah , Brown Jenkin , and the infamous " Black Man . "
Head entity: black man Q621416 32 33
Tail entity: azathoth Q1056509 17
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P22