Given the question: Information: - Nicholas Frank Hugo "Nick" Greiner (born 27 April 1947) is an Australian businessman and former politician. He was the 37th Premier of New South Wales from 1988 to 1992. He was Leader of the New South Wales Division of the Liberal Party from 1983 to 1992 and Leader of the Opposition from 1983 to 1988. - Elections to the 50th Parliament of New South Wales were held on Saturday 25 May 1991 . All seats in the Legislative Assembly and half the seats in the Legislative Council were up for election . The Liberal - National Coalition government of Premier Nick Greiner , which enjoyed a considerable majority following their landslide win at the 1988 election , was seeking a second term in office against new Labor Opposition Leader Bob Carr . The government had reduced the number of lower house seats from 109 to 99 for the 1991 election , reversing an increase approved by the Unsworth Labor government . - Robert John "Bob" Carr (born 28 September 1947) is a former politician from Australia. A member of the Labor Party, he served in the government of Australia as Minister for Foreign Affairs from March 2012 to September 2013, while also serving in the Australian Senate as a Senator for New South Wales. From 4April 1995 to 3 August 2005, Carr was the Premier of New South Wales. He was the longest continuously serving Premier of the state (only Sir Henry Parkes served longer, although Parkes held the office on five separate occasions). - New South Wales (abbreviated as NSW) is a state on the east coast of :Australia. It borders Queensland to the north, Victoria to the south, and South Australia to the west. It has a coast line with the Tasman Sea on its east side. The Australian Capital Territory is an enclave within the state. New South Wales' state capital is Sydney, which is also Australia's most populous city. , the estimated population of New South Wales was 7.5 million, making it Australia's most populous state. Just under two-thirds of the state's population, 4.67 million, live in the Greater Sydney area. Inhabitants of New South Wales are referred to as "New South Welshmen". - Sydney is the state capital of New South Wales and the most populous city in Australia and Oceania. Located on Australia's east coast, the metropolis surrounds the world's largest natural harbour, and sprawls towards the Blue Mountains to the west. Residents of Sydney are known as "Sydneysiders". Sydney is the second official seat and second official residence of the Governor-General of Australia and the Prime Minister of Australia and many federal ministries maintain substantial presences in Sydney. - The Premier of New South Wales is the head of government in the state of New South Wales, Australia. The Government of New South Wales follows the Westminster system, with a Parliament of New South Wales acting as the legislature. The Premier is appointed by the Governor of New South Wales, and by modern convention holds office by virtue of his or her ability to command the support of a majority of members of the lower house of Parliament, the Legislative Assembly. Given the information, choose the subject and object entities that have the relation of 'office contested'.
The answer is:
new south wales state election , premier of new south wales