With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Richard Ramirez instilled terror into the denizens of the greater Los Angeles area.
text_B: Ricardo Leyva Munoz Ramirez , known as Richard Ramirez -LRB- February 29 , 1960 -- June 7 , 2013 -RRB- , was an American serial killer , rapist , and burglar .. serial killer. serial killer. rapist. rapist. burglar. burglary. His highly publicized home invasion crime spree terrorized the residents of the greater Los Angeles area , and later the residents of the San Francisco area , from June 1984 until August 1985 .. home invasion. home invasion. Los Angeles. Los Angeles, California. San Francisco. San Francisco, California. Prior to his capture , Ramirez was dubbed the `` Night Stalker '' by the news media .. news media. news media. He used a wide variety of weapons , including handguns , knives , a machete , a tire iron , and a hammer .. knives. knife. machete. machete. tire iron. tire iron. hammer. hammer. Ramirez , who was an avowed Satanist , never expressed any remorse for his crimes .. Satanist. Satanist. The judge who upheld his thirteen death sentences remarked that Ramirez 's deeds exhibited `` cruelty , callousness , and viciousness beyond any human understanding '' .. death sentences. execution ( legal ). Ramirez died of complications from B-cell lymphoma while awaiting execution on California 's death row .. B-cell lymphoma. B-cell lymphoma. California. California. death row. death row
related.