Question: Who was the first leader of the Nationalist Party in the country the person who described the process of evaporation is from?

<P0-S0> in the first round, incumbent georgi parvanov received 64% of the vote, ahead of nationalist leader volen siderov who came second with 21.5%. <P0-S1> parvanov had to face him in a runoff, as bulgarian law requires a turnout of 50% for a president to be elected in the first round. <P0-S2> the voter turnout in the first round was 42.51%. <SEP> <P1-S0> Wang Chong (; 27 – c. 100 AD), courtesy name Zhongren (仲任), was a Chinese meteorologist, astronomer, and philosopher active during the Han Dynasty. <P1-S1> He developed a rational, secular, naturalistic and mechanistic account of the world and of human beings and gave a materialistic explanation of the origin of the universe. <P1-S2> His main work was the "Lunheng" (論衡, "Critical Essays"). <P1-S3> This book contained many theories involving early sciences of astronomy and meteorology, and Wang Chong was even the first in Chinese history to mention the use of the square-pallet chain pump, which became common in irrigation and public works in China thereafter. <P1-S4> Wang also accurately described the process of the water cycle. <SEP> <P2-S0> the first celluloid as a bulk material for forming objects was made in 1855 in birmingham, england, by alexander parkes, who was never able to see his invention reach full fruition, after his firm went bankrupt due to scale - up costs. <P2-S1> parkes patented his discovery after realising a solid residue remained after evaporation of the solvent from photographic collodion. <SEP> <P3-S0> Sun Yat - sen (/ ˈsʊn ˈjɑːtˈsɛn /; 12 November 1866 -- 12 March 1925) was the founding father of the Republic of China. <P3-S1> The first provisional president of the Republic of China, Sun was a Chinese physician, writer, philosopher, Georgist, calligrapher and revolutionary. <P3-S2> As the foremost pioneer and first leader of a Republican China, Sun is referred to as the ``Father of the Nation ''in the Republic of China (ROC) and the`` forerunner of democratic revolution'' in the People's Republic of China (PRC). <P3-S3> Sun played an instrumental role in the overthrow of the Qing dynasty (the last imperial dynasty of China) during the years leading up to the Xinhai Revolution. <P3-S4> He was appointed to serve as Provisional President of the Republic of China when it was founded in 1912. <P3-S5> He later co-founded the Kuomintang (Nationalist Party of China), serving as its first leader. <P3-S6> Sun was a uniting figure in post-Imperial China, and he remains unique among 20th - century Chinese politicians for being widely revered amongst the people from both sides of the Taiwan Strait. <SEP> <P4-S0> Han-era astronomers adopted a geocentric model of the universe, theorizing that it was shaped like a sphere surrounding the earth in the center. <P4-S1> They assumed that the Sun, Moon, and planets were spherical and not disc-shaped. <P4-S2> They also thought that the illumination of the Moon and planets was caused by sunlight, that lunar eclipses occurred when the Earth obstructed sunlight falling onto the Moon, and that a solar eclipse occurred when the Moon obstructed sunlight from reaching the Earth. <P4-S3> Although others disagreed with his model, Wang Chong accurately described the water cycle of the evaporation of water into clouds.