Information: - Ian McMahon Sinclair (born 10 June 1929) is a retired Australian politician. During his career he was leader of the National Party of Australia and later Speaker of the House of Representatives. - Sir Robert Gordon Menzies, (20 December 189415 May 1978), was the Prime Minister of Australia from 1939 to 1941 and again from 1949 to 1966. He is Australia's longest-serving prime minister, serving over 18 years in total. - John Winston Howard, (born 26 July 1939), was the 25th Prime Minister of Australia, serving from 11March 1996 to 3December 2007. Only Sir Robert Menzies has served in the position longer. - The Prime Minister of the Commonwealth of Australia is the head of government in Australia. The individual who holds the office is the most senior Minister of the Crown, the leader of the Cabinet and the chairperson of the National Security Committee. The office is not mentioned in the Constitution of Australia and exists only through an unwritten political convention and tradition. Despite this, in practice it is the most powerful parliamentary position in Australia. The individual who holds the office is commissioned by the Governor-General of Australia. - Robert James Lee "Bob" Hawke (born 9 December 1929) is an Australian politician who was the Prime Minister of Australia and the Leader of the Labor Party from 1983 to 1991. - Sir Ninian Martin Stephen (born 15 June 1923) is an Australian jurist, who served as a Justice in the High Court of Australia before being appointed the 20th Governor-General of Australia. - The Governor-General of the Commonwealth of Australia is the representative in Australia of the Australian monarch, currently Queen Elizabeth II. The governor-general is appointed by the Queen on the advice of the Prime Minister of Australia. The governor-general has formal presidency over the Federal Executive Council and is Commander-in-Chief of the Australian Defence Force, as well as viceregal representative in the Australian Capital Territory. The functions of the governor-general include appointing ministers, judges, and ambassadors; giving royal assent to legislation passed by Parliament; issuing writs for election; and bestowing Australian honours. - A double dissolution is a procedure permitted under the Australian Constitution to resolve deadlocks in the bicameral Parliament of Australia between the House of Representatives (lower house) and the Senate (upper house). A double dissolution is the only circumstance in which the entire Senate can be dissolved. - William Richard "Bill" Shorten (born 12 May 1967) is an Australian politician who is the current Leader of the Opposition in the Parliament of Australia, in his capacity as Leader of the Australian Labor Party, after being elected party leader at the 2013 Labor leadership ballot. Shorten led Labor at the 2016 federal election at which the Liberal/National Coalition retained majority government. - Federal elections were held in Australia on 11 July 1987 , following the granting of a double dissolution on 5 June by the Governor - General Sir Ninian Stephen . Consequently , all 148 seats in the House of Representatives as well as all 76 seats in the Senate were up for election . The incumbent Australian Labor Party , led by Prime Minister Bob Hawke defeated the opposition Liberal Party of Australia , led by John Howard and the National Party of Australia led by Ian Sinclair . - The Australian Labor Party (ALP, also Labor, was Labour before 1912) is a political party in Australia. The party has been in opposition at federal level since the 2013 election. Bill Shorten has been the party's federal parliamentary leader since 13 October 2013. The party is a federal party with branches in each state and territory. Labor is in government in the states of Victoria, Queensland, South Australia, and in the Australian Capital Territory and Northern Territory. The party competes against the Liberal/National Coalition for political office at the federal and state (and sometimes local) levels. - The Parliament of the Commonwealth of Australia, variously referred to as the Australian Parliament, the Commonwealth Parliament or the Federal Parliament, is the legislative branch of the government of Australia. It consists of three elements: the Queen of Australia, the Senate and the House of Representatives. The Queen is represented by the Governor-General. The combination of two elected houses, in which the members of the Senate represent the six States and the two self-governing Territories while the members of the House represent electoral divisions according to population, is modelled on the United States Congress. Through both houses, however, there is a fused executive, drawn from the Westminster System. After reading the paragraphs above, we are interested in knowing the entity with which 'australian federal election' exhibits the relationship of 'office contested'. Find the answer from the choices below. Choices: - governor - leadership - prime minister - prime minister of australia - speaker
prime minister of australia

Information: - A double bond in chemistry is a chemical bond between two chemical elements involving four bonding electrons instead of the usual two. The most common double bond, that is between two carbon atoms, can be found in alkenes. Many types of double bonds exist between two different elements. For example, in a carbonyl group with a carbon atom and an oxygen atom. Other common double bonds are found in azo compounds (N=N), imines (C=N) and sulfoxides (S=O). In skeletal formula the double bond is drawn as two parallel lines (=) between the two connected atoms; typographically, the equals sign is used for this. Double bonds were first introduced in chemical notation by prominent Russian chemist Alexander Butlerov. - Azo compounds are compounds bearing the functional group RN=NR, in which R and R can be either aryl or alkyl. IUPAC defines azo compounds as: "Derivatives of diazene (diimide), HN=NH, wherein both hydrogens are substituted by hydrocarbyl groups, e.g. PhN=NPh azobenzene or diphenyldiazene." The more stable derivatives contain two aryl groups. The N=N group is called an "azo group". The name azo comes from "azote," the French name for nitrogen that is derived from the Greek ("a-", "not") + ("z", life). - A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge. However, in quantum physics, organic chemistry, and biochemistry, the term "molecule" is often used less strictly, also being applied to polyatomic ions. - Diazene , also called diimine or diimide , is a compound having the formula ( NH ) 2 . It exists as two geometric isomers , E and Z. Diazene is also the parent member of the entire class of azo compounds with the formula ( NR ) 2 , where R is an organyl group . Thus , azobenzene is an example of an organic diazene . - Azobenzene is a chemical compound composed of two phenyl rings linked by a N=N double bond. It is the simplest example of an aryl azo compound. The term 'azobenzene' or simply 'azo' is often used to refer to a wide class of molecules that share the core azobenzene structure, with different chemical functional groups extending from the phenyl rings. These azo compounds are considered as derivatives of diazene (diimide), and are sometimes referred to as 'diazenes'. The diazenes absorb light strongly and are used as dyes in a variety of industries. After reading the paragraphs above, we are interested in knowing the entity with which 'diazene' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - aryl - bearing - bond - charge - chemical bond - chemical compound - class - formula - four - functional group - member - molecule - name - notation - physics - sign - variety
chemical compound