Question: "If We Must Die" is a poem by a man that wrote how many novels?

Context paragraphs:
This Man Must Die: This Man Must Die (French: Que la bête meure ), American title The Beast Must Die, is a 1969 French and Italian thriller film directed by Claude Chabrol.  The story is based on a 1938 novel by Cecil Day-Lewis, writing as Nicholas Blake, "The Beast Must Die".  The film had a total of 1,092,910 admissions in France.

The King Must Die: The King Must Die is a 1958 bildungsroman and historical novel by Mary Renault that traces the early life and adventures of Theseus, a hero in Greek mythology.  Naturally, it is set in Ancient Greece: Troizen, Corinth, Eleusis, Athens, Knossos in Crete, and Naxos.  Rather than retelling the myth, Renault constructs an archaeologically and anthropologically plausible story that might have developed into the myth.  She captures the essentials while removing the more fantastical elements, such as monsters and the appearances of gods.  "The King Must Die" was lauded by critics, with "New York Times" reviewer Orville Prescott calling it "one of the truly fine historical novels of modern times."  Renault wrote a sequel, "The Bull from the Sea", in 1962.

Orcs Must Die! 2: Orcs Must Die!  2 is a trap based action-tower defense video game that Robot Entertainment developed as the follow-up to the original "Orcs Must Die! ", with Microsoft Game Studios publishing the sequel for the PC on July 30, 2012 in the United States.  On April 2, 2012, Microsoft announced the development of "Orcs Must Die!  2" at the Penny Arcade Expo in Boston (PAX East), with their emphasis on co-operative gameplay as the principal addition over the original.

If We Must Die: "If We Must Die" is a 1919 poem by Claude McKay published in the July issue of "The Liberator".  McKay wrote the poem as a response to mob attacks by white Americans upon African-American communities during Red Summer.  The poem was later reprinted in "The Messenger" of the same year.  The poem would also be read in Congress by Republican Senator from Massachusetts Henry Cabot Lodge.

Dorothy Must Die: Dorothy Must Die is a 2014 young adult book by Danielle Paige and her debut novel.  The book, which was produced through Full Fathom Five, was released on April 1, 2014 through HarperCollins and was preceded by the novella "No Place Like Oz".  "Dorothy Must Die" is the first book in the "Dorothy Must Die" series and The CW is currently in negotiations to produce a television series based upon the series.

Warrior's Dance: "Warrior's Dance" is the twentieth single released by the British electronic band The Prodigy on 11 May 2009, and it is the second commercial single from the album "Invaders Must Die" after "Omen" and the free "promo" single "Invaders Must Die".

Claude McKay: Festus Claudius "Claude" McKay (September 15, 1889 – May 22, 1948) was a Jamaican writer and poet, who was a seminal figure in the Harlem Renaissance.  He wrote four novels: "Home to Harlem" (1928), a best-seller that won the Harmon Gold Award for Literature, "Banjo" (1929), "Banana Bottom" (1933), and in 1941 a manuscript called "Amiable With Big Teeth: A Novel of the Love Affair Between the Communists and the Poor Black Sheep of Harlem" which remained unpublished until 2017.  McKay also authored collections of poetry, a collection of short stories, "Gingertown" (1932), two autobiographical books, "A Long Way from Home" (1937) and "My Green Hills of Jamaica" (published posthumously), and a non-fiction, socio-historical treatise entitled "Harlem: Negro Metropolis" (1940).  His 1922 poetry collection, "Harlem Shadows", was among the first books published during the Harlem Renaissance.  His "Selected Poems" was published posthumously, in 1953.

The Pope Must Die: The Pope Must Die (U.S. alternate title The Pope Must Diet) is a 1991 comedy film directed by Peter Richardson and released by Palace Pictures with the backing of Channel 4 Films.  The script was written by Richardson with Pete Richens, derived from elements of an earlier screenplay for a three-part mini-series satirising the Catholic Church, which was rejected by Channel 4.  "The Pope Must Die" stars Robbie Coltrane as a low ranking priest who is mistakenly elected Pope, then has to avoid being assassinated by the Mafia.  The film co-stars Adrian Edmondson, Annette Crosbie, Herbert Lom, Alex Rocco and Richardson.

RFK Must Die: RFK Must Die: The Assassination of Bobby Kennedy is an investigative documentary by Irish writer and filmmaker Shane O'Sullivan released in 2007.  The film expands on his earlier reports for BBC "Newsnight" and "The Guardian" and explores alternative theories of what happened the night Robert F. Kennedy was shot at the Ambassador Hotel in Los Angeles on 5 June 1968.  The title comes from a page of "free writing" found in assassin Sirhan Sirhan's notebook after the shooting, in which he wrote "R.F.K. must die - RFK must be killed Robert F. Kennedy must be assassinated... before June 5 '68."

Hero Must Die: Hero Must Die (Japanese: 勇者死す。 , Hepburn: Yūsha Shisu. )  is a role-playing video game developed by Pyramid and originally released for the DoCoMO mobile service in December 2007.  It was later released for SoftBank and EZweb in 2008, and a "Director's Cut" version was released for DoCoMO in May 2009.  A full remake for the PlayStation Vita was released in February 2016.  In all versions, players navigate both an overworld and localized environments, with fights using a turn-based battle system.  "Hero Must Die" takes place over five days, and features the last exploits of an unnamed hero after he defeats the dark beast Satan at the cost of his life and is given a last chance to explore the world he saved.

Supporting paragraphs: If We Must Die Claude McKay
Answer: four