Question: In which month was the man born, who wrote the cantata Oma maa?

Context paragraphs:
Adegoke Adelabu: Gbadamosi Adegoke Adelabu (3 September 1915 – 25 March 1958) was a prominent personality in the politics of Ibadan city and subsequently that of the Western Region of Nigeria right before the country's independence in 1960.  He was Nigeria's Minister of Natural Resources and Social Services from January 1955 to January 1956 and was later the opposition leader in the Western Regional Assembly until his death in 1958.  He was a self-made man born into a humble family but became an influential figure in Nigerian politics.  He attended Government College, Ibadan and eventually became a business man.  His successful political career was cut short when he was killed in a car crash, not long before Nigeria gained independence from Britain.

Claude Choules: Claude Stanley Choules ( ; 3 March 1901 – 5 May 2011) was an English-born military serviceman from Perth, Australia who at the time of this death was the oldest combat veteran of the First World War from England, having served with the Royal Navy from 1915 until 1926, after having emigrated to Australia he served with the Australian Royal Navy, from 1926 until 1956, as a Chief Petty Officer and was a naturalised Australian citizen.  He was the last surviving military witness to the scuttling of the German fleet in Scapa Flow in 1919.  He was also the last surviving veteran to have served in both world wars, at the time of his death, he was also the third-oldest verified military veteran in the world and the oldest known living man in Australia.  He was the seventh-oldest living man in the world.  Choules became the oldest man born in the United Kingdom following the death of Stanley Lucas on 21 June 2010.  Choules died in at the age of 110 years and 63 days.  He had been the oldest British-born man; following his death, that honour went to Reverend Reginald Dean.  In December 2011, the landing ship HMAS "Choules" was named after him, only the second Royal Australian Navy vessel named after a sailor.

Selig ist der Mann, BWV 57: Selig ist der Mann (Blessed is the man), BWV 57 , is a church cantata by Johann Sebastian Bach.  He wrote the Christmas cantata in Leipzig in 1725 for the Second Day of Christmas, which was celebrated that year as St. Stephen's Day, and first performed it on 26 December 1725.

Jean Sibelius: Jean Sibelius ( ;    ), born Johan Julius Christian Sibelius (8 December 186520 September 1957), was a Finnish composer and violinist of the late Romantic and early-modern periods.  He is widely recognized as his country's greatest composer and, through his music, is often credited with having helped Finland to develop a national identity during its struggle for independence from Russia.

Francesco Bellini: Francesco Bellini, {'1': ", '2': ", '3': ", '4': "} (born November 20, 1947) is research scientist, administrator, entrepreneur and Quebecer business man born in Italy, Ascoli Piceno, in 1947.

Oma maa: Oma maa (My Own Land or Our Native Land, literally: Own land/country), Op.  92, is a cantata by Jean Sibelius.  He composed the work on a Finnish text, a poem by Kallio which he chose himself, for mixed chorus and orchestra, to celebrate the tenth anniversary of the National Chorus.  Sibelius completed the cantata on 18 March 1918.  conducted the first performance.

Juraj Filas: Juraj Filas (born 5 March 1955 in Košice, Slovakia) is a Slovak composer.  His work includes more than 100 compositions: symphonies, cantatas, concerts, numerous compositions for chamber music, as well as the prize-winning TV opera "momento mori"; a concerto grosso "Copernicus"; the opera "Jane Eyre" (2010); "The Wisdom of the Wise Man", a cantata for choir, violoncello and organ; "The Song of Solomon", a cantata for soli, choir and orchestra; and the requiem "Oratio Spei" which is dedicated to the victims of terrorism.

Jiroemon Kimura: Jiroemon Kimura (木村 次郎右衛門 , Kimura Jirōemon , April 19, 1897 – June 12, 2013) was a Japanese supercentenarian.  He became the oldest verified male in history on December 28, 2012, at the age of 115 years and 253 days when he surpassed the age of Christian Mortensen who died in 1998, and also became the first and so far the only man who indisputably reached 116 years of age, being 116 years, 54 days old at the time of his death from natural causes on June 12, 2013, in a hospital in his hometown of Kyōtango, Kyoto Prefecture, Japan.  He was the last known living man born in the 19th century.

Deolinda Rodríguez de Almeida: Deolinda Rodríguez de Almeida ( ) (also, Deolinda Rodrigues Francisco de Almeida; pseudonym, Langidila; nickname, "Mother of the Revolution"; 10 February 1939 – 1968) was an Angolan nationalist, heroine, militant, writer, and translator, who also taught, wrote poetry, and worked as a radio host.  Born into a Methodist family, she received a scholarship to study in Brazil, from where she corresponded with Martin Luther King, Jr. Fearing extradition, she continued her education in the United States before returning to Angola.  Rodríguez was a member of the People's Movement for the Liberation of Angola (MPLA) and co-founded its women's wing, the Organização da Mulher de Angola (Organization of Angolan Women; OMA).  Due to her support of the growing Angolan Independence movement, she was captured, tortured, and executed.  A documentary of her life was released in 2014.

James Sisnett: James Emmanuel "Doc" Sisnett (22 February 1900 – 23 May 2013) was a Barbadian supercentenarian.  Born and raised in Saint George, he spent his life as a blacksmith, sugar factory worker, and farmer, not retiring from the latter until he turned 100.  In excellent health throughout his life, he died at the age of 113 years, 90 days and held a number of distinctions.  Among them, he was the verified oldest man in the Western Hemisphere, the second-oldest man in the world, and the last surviving black man born in the 19th century.  He was also the only verified supercentenarian from Barbados and, along with Jiroemon Kimura (who died 20 days after Sisnett), one of the last men born in the 19th century.

Supporting paragraphs: Oma maa Jean Sibelius
Answer: December