Answer the following question: Information: - England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west. The Irish Sea lies northwest of England and the Celtic Sea lies to the southwest. England is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain (which lies in the North Atlantic) in its centre and south; and includes over 100 smaller islands such as the Isles of Scilly, and the Isle of Wight. - Oglaigh na hEireann, abbreviated OE, is an Irish-language idiom that can be translated variously as "soldiers of Ireland", "warriors of Ireland", "volunteers of Ireland" or "Irish volunteers". In traditional Gaelic script, it is written Ogla na hEreann. - A car bomb, or truck bomb, also known as a vehicle-borne improvised explosive device (VBIED), is an improvised explosive device placed inside a car or other vehicle and detonated. - The Northern Ireland Act 1998 (c.47) is an Act of the Parliament of the United Kingdom which established a devolved legislature for Northern Ireland, the Northern Ireland Assembly, after decades of direct rule from Westminster. - The proxy bomb ( also known as a human bomb ) was a tactic used mainly by the Provisional Irish Republican Army ( IRA ) in Northern Ireland during the conflict known as '' the Troubles '' . It involved forcing people ( including civilians , off - duty members of the British security forces , or people working for the security forces ) to drive car bombs to British military targets , after placing them or their families under some kind of threat . The tactic was later adopted by FARC in Colombia and by rebels in the Syrian Civil War . The tactic has been compared to a suicide bomb , although each bomber in these cases is coerced rather than being a volunteer . - A paramilitary is a semi-militarized force whose organizational structure, tactics, training, subculture, and (often) function are similar to those of a professional military, but which is not included as part of a state's formal armed forces. - Ireland, also described as the Republic of Ireland ('), is a sovereign state in north-western Europe occupying about five-sixths of the island of Ireland. The capital and largest city is Dublin, which is located on the eastern part of the island, and whose metropolitan area is home to around a third of the country's 4.75 million inhabitants. The state shares its only land border with Northern Ireland, a part of the United Kingdom. It is otherwise surrounded by the Atlantic Ocean, with the Celtic Sea to the south, Saint George's Channel to the south-east, and the Irish Sea to the east. It is a unitary, parliamentary republic. The legislature, the ', consists of a lower house, ', an upper house, ', and an elected President (') who serves as the largely ceremonial head of state, but with some important powers and duties. The head of government is the ' (Prime Minister, literally 'Chief', a title not used in English), who is elected by the Dail and appointed by the President, and appoints other government ministers. - A republic (from ) is a sovereign state, country, or government which is organized with a form of government in which power resides in elected individuals representing the citizen body and government leaders exercise power according to the rule of law. In modern times, the definition of a republic commonly refers to a government which excludes a monarch. Currently, 147 of the world's 206 sovereign states use the word "republic" as part of their official names; not all of these are republics in the sense of having elected governments, nor do all nations with elected governments use the word "republic" in their names. - Belfast is the capital and largest city of Northern Ireland, the second largest on the island of Ireland, and the heart of the tenth largest Primary Urban Area in the United Kingdom. On the River Lagan, it had a population of 286,000 at the 2011 census and 333,871 after the 2015 council reform. Belfast was granted city status in 1888. - The Northern Ireland Assembly (Ulster Scots: "Norlin Airlan Assemblie") is the devolved legislature of Northern Ireland. It has power to legislate in a wide range of areas that are not explicitly reserved to the Parliament of the United Kingdom, and to appoint the Northern Ireland Executive. It sits at Parliament Buildings at Stormont in Belfast. - The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union. - The Troubles is the common name for the ethno-nationalist conflict in Northern Ireland during the late 20th century. Also known internationally as the Northern Ireland conflict, it is sometimes described as a "guerrilla war" or "low-level war". The conflict began in the late 1960s and is usually deemed to have ended with the Good Friday "Belfast" Agreement of 1998. Although the Troubles mainly took place in Northern Ireland, violence spilled over at times into parts of the Republic of Ireland, England and mainland Europe. - The Irish Republic (or ) was a revolutionary state that declared its independence from Britain in January 1919. In theory the Republic covered the whole island of Ireland, but by 1920 its functional control was limited to only 21 of Ireland's 32 counties, and British state forces maintained presence across much of the north-east, as well as Cork, Dublin and other major towns. - The Good Friday Agreement (GFA) or Belfast Agreement (or ; Ulster-Scots: "Guid Friday Greeance" or "Bilfawst Greeance") was a major political development in the Northern Ireland peace process of the 1990s. - Ulster (or "Cuige Uladh" , Ulster Scots: "Ulster" or "Ulster") is a province in the north of the island of Ireland. In ancient Ireland, it was one of the fifths ruled by a "ri ruirech", or "king of over-kings". - Northern Ireland (; Ulster Scots: "") is a top-level constituent unit of the United Kingdom in the northeast of Ireland. It is variously described as a country, province, region, or "part" of the United Kingdom, amongst other terms. Northern Ireland shares a border to the south and west with the Republic of Ireland. In 2011, its population was 1,810,863, constituting about 30% of the island's total population and about 3% of the UK's population. Established by the Northern Ireland Act 1998 as part of the Good Friday Agreement, the Northern Ireland Assembly holds responsibility for a range of devolved policy matters, while other areas are reserved for the British government. Northern Ireland co-operates with the Republic of Ireland in some areas, and the Agreement granted the Republic the ability to "put forward views and proposals" with "determined efforts to resolve disagreements between the two governments". - The Provisional Irish Republican Army (IRA or PIRA) was an Irish republican paramilitary organisation that sought to remove Northern Ireland from the United Kingdom and to bring about an independent republic encompassing all of Ireland. It was the biggest and most active republican paramilitary group during the Troubles. It saw itself as the successor to the original IRA and called itself simply the Irish Republican Army, or "Oglaigh na hEireann" in Irish. It was also widely referred to as such by others. What entity does 'proxy bomb' has the relation 'subclass of' with?
Answer:
improvised explosive device