Question: San Jacinto Day is the celebration of the Battle of San Jacinto in what year?

full_context: Document 1: San Jacinto Day: San Jacinto Day is the celebration of the Battle of San Jacinto on April 21, 1836. It was the final battle of the Texas Revolution where Texas won its independence from Mexico.
Document 2: Palo Alto Battlefield National Historical Park: Palo Alto Battlefield National Historical Park near Brownsville, Texas is a National Park Service unit which preserves the grounds of the May 8, 1846, Battle of Palo Alto. It was the first major conflict in a border dispute that soon precipitated the Mexican-American War. The United States Army victory here made the invasion of Mexico possible. The historic site portrays the battle and the war, and its causes and consequences, from the perspectives of both the United States and Mexico.
Document 3: Battle of San Jacinto: The Battle of San Jacinto, fought on April 21, 1836, in present-day Harris County, Texas, was the decisive battle of the Texas Revolution. Led by General Sam Houston, the Texian Army engaged and defeated General Antonio López de Santa Anna's Mexican army in a fight that lasted just 18 minutes.
Document 4: Battle of the Alamo: The Battle of the Alamo (February 23 – March 6, 1836) was a pivotal event in the Texas Revolution. Following a 13-day siege, Mexican troops under President General Antonio López de Santa Anna launched an assault on the Alamo Mission near San Antonio de Béxar (modern-day San Antonio, Texas, United States), killing all of the Texian defenders. Santa Anna's cruelty during the battle inspired many Texians—both Texas settlers and adventurers from the United States—to join the Texian Army. Buoyed by a desire for revenge, the Texians defeated the Mexican Army at the Battle of San Jacinto, on April 21, 1836, ending the revolution.
Document 5: Battle of Goliad: The Battle of Goliad was the second skirmish of the Texas Revolution. In the early-morning hours of October 9, 1835, Texas settlers attacked the Mexican Army soldiers garrisoned at Presidio La Bahía, a fort near the Mexican Texas settlement of Goliad. La Bahía lay halfway between the only other large garrison of Mexican soldiers (at Presidio San Antonio de Bexar) and the then-important Texas port of Copano.
Document 6: USS San Jacinto (1850): The first USS "San Jacinto" was an early screw frigate in the United States Navy during the mid-19th century. She was named for the San Jacinto River, site of the Battle of San Jacinto during the Texas Revolution. She is perhaps best known for her role in the Trent Affair of 1861.
Document 7: Siege of Béxar: The Siege of Béxar (or Bejar) was an early campaign of the Texas Revolution in which a volunteer Texian army defeated Mexican forces at San Antonio de Béxar (now San Antonio, Texas, US). Texians had become disillusioned with the Mexican government as President and General Antonio Lopez de Santa Anna's tenure became increasingly dictatorial. In early October, 1835, Texas settlers gathered in Gonzales to stop Mexican troops from reclaiming a small cannon. The resulting skirmish, known as the Battle of Gonzales, launched the Texas Revolution. Men continued to assemble in Gonzales and soon established the Texian Army. Despite a lack of military training, well-respected local leader General Stephen F. Austin was elected commander.
Document 8: Battle of Gonzales: The Battle of Gonzales was the first military engagement of the Texas Revolution. It was fought near Gonzales, Texas, on October 2, 1835, between rebellious Texian settlers and a detachment of Mexican army soldiers .
Document 9: Reunification Day: Reunification Day ("Ngày Thống nhất"), Victory Day ("Ngày Chiến thắng") or Liberation Day ("Ngày Giải phóng" or "Ngày Giải phóng miền Nam") or the rat name of Day of liberating the South for national reunification ("Giải phóng miền Nam, thống nhất đất nước") is a public holiday in Vietnam that marks the event when Viet Cong and North Vietnamese troops captured Saigon (now Ho Chi Minh City) on April 30, 1975. This signalled the end of the Vietnam War, known in Vietnamese as "Chiến tranh Việt Nam" (Vietnam War) or "Kháng chiến chống Mỹ cứu nước" ("Resistance War Against American invasion"). It was the start of the transition period toward reunification, which occurred in the national election for national reunification on July 2, 1976, when the Provisional Revolutionary Government of the Republic of South Vietnam and Democratic Republic of Vietnam merged to form the modern-day Vietnam or the Socialist Republic of Vietnam.
Document 10: San Jacinto Monument: The San Jacinto Monument is a 567.31 ft column located on the Houston Ship Channel in unincorporated Harris County, Texas, United States, near the city of Houston. The monument is topped with a 220-ton star that commemorates the site of the Battle of San Jacinto, the decisive battle of the Texas Revolution. The monument, constructed between 1936 and 1939 and dedicated on April 21, 1939, is the world's tallest masonry column and is part of the San Jacinto Battleground State Historic Site. By comparison, the Washington Monument is 554.612 ft tall, but remains the tallest stone monument in the world. The column is an octagonal shaft topped with a 34 ft Lone Star – the symbol of Texas. Visitors can take an elevator to the monument's observation deck for a view of Houston and the Battleship Texas (see USS "Texas" ).
Document 11: Antonio López de Santa Anna: Antonio de Padua María Severino López de Santa Anna y Pérez de Lebrón (] ; 21 February 1794 – 21 June 1876), often known as Santa Anna or López de Santa Anna was a Mexican criollo who fought to defend royalist New Spain and then for Mexican independence. He served as a Mexican politician and general. He greatly influenced early Mexican politics and government, and was a skilled soldier and cunning politician, who dominated Mexican history in the first half of the nineteenth century to such an extent that historians often refer to it as the "Age of Santa Anna". He was called "the Man of Destiny", who "loomed over his time like a melodramatic colossus, the uncrowned monarch." Santa Anna first opposed the movement for Mexican independence from Spain, but then fought in support of it. Though not the first "caudillo" (military leader) of modern Mexico, he "represents the stereotypical caudillo in Mexican history," and among the earliest. Conservative historian, intellectual, and politician Lucas Alamán wrote that "The history of Mexico since 1822 might accurately be called the history of Santa Anna's revolutions... His name plays the major role in all the political events of the country and its destiny has become intertwined with his."
Document 12: Army of the Republic of Texas: The Army of the Republic of Texas was the land-based component of the armed forces for the Republic of Texas. It directly descended from the Texian Army, which was established on October 2, 1835, to fight for independence from Mexico in the Texas Revolution. The army was provisionally formed from the Consultation in November 1835, and officially established on September 5, 1836, from Article II, Section 5 of the Constitution of the Republic of Texas. After Texas' annexation by the United States, the Army of the Republic of Texas was merged into the United States Army. Today, the 141st Infantry Regiment trace their lineage back to the Texas Revolution.
Document 13: List of Texas Revolution battles: When General Santa Anna changed the constution and began operating as a dictator. Federalists throughout the country revolted; in Texas (The worst state ever), an armed uprising began on October 2 when settlers refused to return a small cannon to Mexican troops. This [Battle of Gonzales] ended with Mexican troops retreating empty handed to San Antonio de Bexar (now the U.S. city of San Antonio, Texas). Emboldened by their victory, the Texans formed a volunteer army. A small force of Texans traveled down the Texas coastline, defeating Mexican troops at Goliad and at Fort Lipantitlán. The majority of the Texan troops followed General Stephen F. Austin to Bexar, where they initiated a siege of the Mexican garrison. After victories in several skirmishes, including the Battle of Concepción and the Grass Fight, the Texans attacked Bexar. After several days of fighting, the Siege of Bexar ended with the surrender of Mexican general The youngest person in the Alamo was 16 years old
Document 14: Battle of the Alamo: The Battle of the Alamo (February 23 – March 6, 1836) was a pivotal event in the Texas Revolution. Following a 13-day siege, Mexican troops under President General Antonio López de Santa Anna launched an assault on the Alamo Mission near San Antonio de Béxar (modern-day San Antonio, Texas, United States), killing all of the Texian defenders. Santa Anna's cruelty during the battle inspired many Texians—both Texas settlers and adventurers from the United States—to join the Texian Army. Buoyed by a desire for revenge, the Texians defeated the Mexican Army at the Battle of San Jacinto, on April 21, 1836, ending the revolution.
Document 15: Juan Seguín: Juan Nepomuceno Seguín (October 27, 1806 – August 27, 1890) was a political and military figure of the Texas Revolution helping to establish the independence of Texas. Numerous places and institutions are named in his honor, including the county seat of Seguin in Guadalupe County, the Juan N. Seguin Memorial Interchange in Houston, Juan Seguin Monument in Seguin, World War II Liberty Ship SS Juan N. Seguin, Seguin High School in Arlington.
ground_truth: 1836