Please answer the following question: Information: - Katunayake ( in Sinhala, in Tamil), is a suburb of Negombo city in Western Province, Sri Lanka. It is the site of Bandaranaike International Airport or Colombo Airport, the primary international air gateway to Sri Lanka. With the change of government in 1977 and the introduction of the open economy policy a large area was allocated to create a free trade zone (currently known as the Export Promotion Zone). This created a large amount of job opportunities for the local youth and has contributed substantially towards the country's economy. - Mavil Aru ("Mother River") is a waterway that supplies water to some regions of eastern Sri Lanka. - A paddy field is a flooded parcel of arable land used for growing semiaquatic rice. Paddy cultivation should not be confused with cultivation of deep water rice, which is grown in flooded conditions with water more than 50cm (20in) deep for at least a month. Genetic evidence shows that all forms of paddy rice, both "indica" and "japonica", spring from a domestication of the wild rice "Oryza rufipogon" that first occurred 8,20013,500 years ago South of the Yangtze River in present-day China. However, the domesticated "indica" subspecies currently appears to be a product of the introgression of favorable alleles from "japonica" at a later date, so that there are possibly several events of cultivation and domestication. Paddy fields are the typical feature of rice farming in east, south and southeast Asia. Fields can be built into steep hillsides as terraces and adjacent to depressed or steeply sloped features such as rivers or marshes. They can require a great deal of labor and materials to create, and need large quantities of water for irrigation. Oxen and water buffalo, adapted for life in wetlands, are important working animals used extensively in paddy field farming. - The Liberation Tigers of Tamil Eelam ("Tamia viutalaip pulika", "Dhemala lm vimukthi koti", commonly known as the LTTE or the Tamil Tigers) was a militant organization that was based in northeastern Sri Lanka. Founded in May 1976 by Velupillai Prabhakaran, it waged a secessionist nationalist insurgency to create an independent state of Tamil Eelam in the north and east of Sri Lanka for Tamil people. This campaign led to the Sri Lankan Civil War, which ran from 1983 until 2009, when the LTTE was defeated by the Sri Lankan military during the presidency of Mahinda Rajapaksa. - The Air Tigers (Tamil: ) was the air-wing of the Liberation Tigers of Tamil Eelam (LTTE), who used it against the Government of Sri Lanka. Though the existence of the Air Tigers had been the subject of speculation for many years, the existence of the wing was only revealed after an attack in March 2007, during Eelam War IV. - The Sri Lanka Air Force (SLAF) ("Sri Lanka Guwan Hamudawa") is the air arm and the youngest of the Sri Lanka Armed Forces. It was founded in 1951 as the Royal Ceylon Air Force (RCyAF) with the assistance of the Royal Air Force (RAF). The SLAF played a major role throughout the Sri Lankan Civil War. The SLAF operates more than 160 aircraft and has a projected trained strength of 27,400 airmen and 1,300 officers, who are from both regular and reserve service. The Sri Lanka Air Force has expanded to specialise mainly in providing air-support to ground forces, troop landing, and carrying out air strikes on rebel-held areas in the Northern and Eastern theatres, but is also capable of high- and low-level air defence. - The term came into wide use in the seventeenth and eighteenth centuries through the writings of Hugo Grotius (1653), Cornelius van Bynkershoek (1707), and Jean-Jacques Burlamaqui (1732), among others, and due to the rise of the political doctrine of "jus ad bellum" or "just war theory". The term is also used informally to refer to any "just cause" a nation may claim for entering into a conflict. It is used retrospectively to describe situations that arose before the term came into wide use, as well as being used to describe present-day situationseven those in which war has not been formally declared. - The Northern Theater of Eelam War IV refers to the fighting that took place in the northern province of Sri Lanka between July 2006 and May 18 , 2009 . - Eelam War IV is the name given to the fourth phase of armed conflict between the Sri Lankan military and the separatist Liberation Tigers of Tamil Eelam (LTTE), which is currently proscribed as a terrorist organisation by 32 countries. Renewed hostilities began on the 26 July 2006, when Sri Lanka Air Force fighter jets bombed several LTTE camps around Mavil Aru anicut. The government's "casus belli" was that the LTTE had cut off the water supply to surrounding paddy fields in the area. The fighting resumed after a four-year ceasefire between the Government of Sri Lanka (GoSL) and LTTE. Continued fighting led to several territorial gains for the Sri Lankan Army, including the capture of Sampur, Vakarai and other parts of the east. The war took on an added dimension when the LTTE Air Tigers bombed Katunayake airbase on March 26, 2007, the first rebel air attack without external assistance in history. - Eelam War I is the name given to the initial phase of the armed conflict between the government of Sri Lanka and the LTTE. Although tensions between the government and Tamil militant groups had been brewing since the 1970s, full-scale war did not break out until an attack by the LTTE on a Sri Lanka Army patrol in Jaffna, in the north of the country, on July 23, 1983, which killed 13 soldiers. The attack, and the subsequent riots in the south (dubbed Black July), are generally considered as the start of the conflict. This fighting continued until 1985, when peace talks were held between the two sides in Thimphu, Bhutan, in hopes of seeking a negotiated settlement. They proved fruitless and fighting soon resumed. - Water supply is the provision of water by public utilities commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Irrigation is covered separately. - The Government of Sri Lanka ("GoSL") is a semi-presidential system determined by the Sri Lankan Constitution. After reading the paragraphs above, we are interested in knowing the entity with which 'northern theater of eelam war iv' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - 1 - air force - airbase - aircraft - armed conflict - armed forces - army - campaign - city - community - conflict - constitution - cut - doctrine - field - fighter - force - government - international airport - july - march - may - mother - name - organization - phase - policy - presidency - product - public - rice - river - spring - suburb - term - theory - two - van - war - water - wing
A:
conflict