<human>: Background: Howard Phillips Lovecraft (August 20, 1890 - March 15, 1937) was an American writer who achieved posthumous fame through his influential works of horror fiction. He was virtually unknown and published only in pulp magazines before he died in poverty, but he is now regarded as one of the most significant 20th-century authors in his genre. Lovecraft was born in Providence, Rhode Island, where he spent most of his life. Among his most celebrated tales are The Rats in the Walls, The Call of Cthulhu, At the Mountains of Madness, The Shadow over Innsmouth, and The Shadow Out of Time, all canonical to the Cthulhu Mythos.
Context: Lovecraft's aunts disapproved of this relationship with Sonia. Lovecraft and Greene married on March 3, 1924, and relocated to her Brooklyn apartment at 793 Flatbush Avenue; she thought he needed to get out of Providence in order to flourish and was willing to support him financially. Greene, who had been married before, later said Lovecraft had performed satisfactorily as a lover, though she had to take the initiative in all aspects of the relationship. She attributed Lovecraft's passive nature to a stultifying upbringing by his mother. Lovecraft's weight increased to 90 kg (200 lb) on his wife's home cooking.  He was enthralled by New York, and, in what was informally dubbed the Kalem Club, he acquired a group of encouraging intellectual and literary friends who urged him to submit stories to Weird Tales; editor Edwin Baird accepted many otherworldly 'Dream Cycle' Lovecraft stories for the ailing publication, though they were heavily criticized by a section of the readership. Established informally some years before Lovecraft arrived in New York, the core Kalem Club members were boys' adventure novelist Henry Everett McNeil; the lawyer and anarchist writer James Ferdinand Morton, Jr.; and the poet Reinhardt Kleiner.  On New Year's Day of 1925, Sonia moved to Cleveland for a job opportunity, and Lovecraft left Flatbush for a small first-floor apartment on 169 Clinton Street "at the edge of Red Hook"--a location which came to discomfort him greatly. Later that year the Kalem Club's four regular attendees were joined by Lovecraft along with his protege Frank Belknap Long, bookseller George Willard Kirk, and Lovecraft's close friend Samuel Loveman. Loveman was Jewish, but was unaware of Lovecraft's nativist attitudes. Conversely, it has been suggested that Lovecraft, who disliked mention of sexual matters, was unaware that Loveman and some of his other friends were homosexual. CANNOTANSWER
Question: Who was HP Lovecraft's wife?

Answer:
<bot>: Lovecraft and Greene married on March 3, 1924,