Information:  - Hun Sen (born 5 August 1952) is the Prime Minister of Cambodia, President of the Cambodian People's Party (CPP), and Member of Parliament (MP) for Kandal. He has served as Prime Minister since 1985, making him the longest serving head of government of Cambodia, and one of the longest serving leaders in the world. From 1979 to 1986 and again from 1987 to 1990, Hun Sen served as Cambodia's foreign minister. His full honorary title is Samdech Akeak Moha Sena Padey Techo Hun Sen (meaning "Lord Prime Minister, Supreme Military Commander Hun Sen"). Born Hun Bunal, he changed his name to Hun Sen in 1972 two years after joining the Khmer Rouge.  - FUNCINPEC is a royalist political party in Cambodia. Founded in 1981 by Norodom Sihanouk, it started off as a resistance movement against the People's Republic of Kampuchea (PRK) government. In 1982, it formed a resistance pact, the Coalition Government of Democratic Kampuchea (CGDK), together with the Khmer People's National Liberation Front (KPNLF) and the Khmer Rouge. It was one of the signatory parties of the 1991 Paris Peace Accords, which paved the way for the formation of the United Nations Transitional Authority in Cambodia (UNTAC). In 1992, FUNCINPEC became a political party and participated in the 1993 general elections organised by UNTAC. It won the elections, and formed a coalition government with the Cambodian People's Party (CPP), with which it jointly headed. Norodom Ranariddh, Sihanouk's son who had succeeded him as the party president, became First Prime Minister while Hun Sen, who was from the CPP, became Second Prime Minister.  - Barack Hussein Obama II (; born August 4, 1961) is an American politician who served as the 44th President of the United States from 2009 to 2017. He was the first African American to serve as president, as well as the first born outside the contiguous United States. He previously served in the U.S. Senate representing Illinois from 2005 to 2008, and in the Illinois State Senate from 1997 to 2004.  - The incumbent is the current holder of a political office. This term is usually used in reference to elections, in which races can often be defined as being between an incumbent and non-incumbent(s). For example, in the 2012 United States presidential election, Barack Obama was the incumbent, because he had been the president in the previous term while the election sought to determine the president for the current term. A race without an incumbent is referred to as an open seat.  - Norodom Ranariddh (born 2 January 1944) is a Cambodian prince, politician and law academic. He is the second son of Norodom Sihanouk of Cambodia and a half-brother of the current king, Norodom Sihamoni. Ranariddh is the president of FUNCINPEC, a Cambodian royalist party. He was also the First Prime Minister of Cambodia, serving between 1993 and 1997, and subsequently as the President of the National Assembly between 1998 and 2006.  - Head of government is a generic term used for either the highest or second highest official in the executive branch of a sovereign state, a federated state, or a self-governing colony, (commonly referred to as countries, nations or nation-states) who often presides over a cabinet, a group of ministers or secretaries who lead executive departments. The term "head of government" is often differentiated from the term "head of state", (e.g. as in article 7 of the Vienna Convention on the Law of Treaties, article 1 of the Convention on the Prevention and Punishment of Crimes against Internationally Protected Persons, including Diplomatic Agents and the United Nations protocol list), as they may be separate positions, individuals, and/or roles depending on the country.  - General elections were held in Cambodia on 27 July 2003 to elect members of the National Assembly . The election was won by the incumbent Prime Minister Hun Sen 's Cambodian People 's Party , who claimed a majority of 73 seats in the 123 - seat parliament . However , due to the requirement for a two - thirds majority to elect a Prime Minister , a new government was not formed until July 2004 when a deal was reached with the Funcinpec party .  - A prime minister is the most senior minister of cabinet in the executive branch of government, often in a parliamentary or semi-presidential system. In many systems, the prime minister selects and may dismiss other members of the cabinet, and allocates posts to members within the government. In most systems, the prime minister is the presiding member and chairman of the cabinet. In a minority of systems, notably in semi-presidential systems of government, a prime minister is the official who is appointed to manage the civil service and execute the directives of the head of state. In parliamentary systems fashioned after the Westminster system, the prime minister is the presiding and actual head of government and head of the executive branch. In such systems, the head of state or the head of state's official representative (i.e. the monarch, president, or governor-general) usually holds a largely ceremonial position, although often with reserve powers.  - The Prime Minister of Cambodia is the head of government of Cambodia. The prime minister is also the chairman of the Cabinet and leads the executive branch of the Royal Cambodian Government. The prime minister is required to be a member of parliament, and is appointed by the monarch for a term of five years. Since 1945, there have been 36 prime ministers.  - Norodom Sihanouk (31 October 192215 October 2012) was the King of Cambodia from 1941 to 1955 and again from 1993 to 2004. Affectionately known to the Cambodian people as Samdech Euv (father prince), Sihanouk became king in 1941. After the Second World War, he campaigned for Cambodia's independence from French rule, which took place in 1953. In 1955, Sihanouk abdicated the throne in favour of his father Norodom Suramarit, and went on to form the political organisation Sangkum. Sihanouk led the Sangkum to victory in the 1955 general elections, and became the Prime Minister of Cambodia. After his father's death in 1960, Sihanouk introduced a constitutional amendment which made him the Head of State of Cambodia, a position which he held until 1970. Between 1955 and 1970, Sihanouk governed Cambodia under one-party rule, and cracked down on political dissent from the Democrat party and Pracheachon. While he was officially neutral in foreign relations, in practice he was friendlier toward communist countries, particularly China, than to the United States and its anti-Communist allies.    Given the paragraphs above, decide what entity has the relation 'office contested' with 'prime minister of cambodia'.
Answer:
cambodian general election