Question: What is the best known work by the composer of La Cetra?

<P0-S0> La cetra, Op. <P0-S1>  9, is a set of twelve violin concertos by Antonio Vivaldi, published in 1727. <P0-S2>  All of them are for violin solo, strings, and basso continuo, except No. 9 in B flat, which features two solo violins. <P0-S3>  The set was named after the cetra, a lyre-like instrument, and was dedicated to Emperor Charles VI. <SEP> <P1-S0> Roger la Honte is an 1886 novel by the French writer Jules Mary. <P1-S1>  Its melodramatic plot takes place around the time of the Franco-Prussian War. <P1-S2>  It is his best known work. <P1-S3>  In 1887-1889 he published a sequel "The Revenge of Roger la Honte" which was released in two parts. <SEP> <P2-S0>  He was commissioned to paint a large mural decorating the City Centre. <P2-S1>  His paintings depict famine, refugees from Mozambique during the Civil War, voting and democracy, wedding celebration, spirits and possession, and the Nyau masquerade. <P2-S2>  Mede is an evangelical Christian and his work begins with a point of light from which the rest of the painting flows, the energy from God. <P2-S3>  Mede is best known for his modern art styles: modern, futurist, cubist and pointillist, with strong local themes. <P2-S4>  Lonely Planet said "possibly the best-known [Malawian] artist is Cuthy Mede – he is also actively involved in the development and promotion of Malawian art within the country and around the world." <P2-S5>  His garden in Lilongwe was made into a work of art, in white and light, with fluorescent light tubes hanging from trees and white painted rocks lining the drive and entry. <P2-S6>  He also brought fine art work from other Malawian artists into his Gallery. <P2-S7>  By the 1980s Mede established Gallerie Africaine in Lilongwe City Centre, the first art gallery by a local artist in Malawi. <P2-S8>  In later years Mede painted mostly in shades of blue, then white on white, the purest light. <P2-S9>  His paintings depicted local people, historic events and current events in Malawi, Biblical references with local interpretations, indigenous religious expressions, and paintings about ideas such as Justice, Greed, Man and Machine. <P2-S10>  Mede's wife, Esther (deceased 2009), served as Principal Secretary for the Ministry of Research and Environmental Affairs in the Malawi government. <P2-S11>  Cuthy Mede grew up on Likoma Island, Lake Malawi where he drew in the rough sands of the beach as a child. <P2-S12>  Best known for his paintings, Mede also produced sculptural forms such as wood figures covered in beads and pigments. <P2-S13>  Mede exhibited his work widely in Malawi, becoming a successful artist selling his work to international collectors. <P2-S14>  Mede encouraged the work of young Malawian artists struggling to make a living selling folk art and wood carvings as street traders. <SEP> <P3-S0> Antonio Lucio Vivaldi (] ; 4 March 1678 – 28 July 1741) was an Italian Baroque composer, virtuoso violinist, teacher and cleric. <P3-S1>  Born in Venice, he is recognized as one of the greatest Baroque composers, and his influence during his lifetime was widespread across Europe. <P3-S2>  He composed many instrumental concertos, for the violin and a variety of other instruments, as well as sacred choral works and more than forty operas. His best-known work is a series of violin concertos known as "The Four Seasons".