Question: How is Michael Coutts-Trotter related to this Australian politician who is the deputy leader of the Labor Party since 2013

Context paragraphs:
Ralph Clarke (Australian politician): Ralph Desmond Clarke (born 4 October 1951) is a former Australian politician.  He was an Australian Labor Party member of the South Australian House of Assembly between 1993 and 2002, representing the electorate of Ross Smith.  He was the deputy leader of the State Parliamentary Labor Party, and thus the deputy opposition leader, until he was deposed in factional infighting.

Michael Coutts-Trotter: Michael Coutts-Trotter, an Australian public servant and is married to Tanya Plibersek MP, an Australian Labor Party politician and the federal Deputy Leader of the Opposition.

Roger Goldsworthy (politician): Eric Roger Goldsworthy, AO was an Australian politician and 3rd Deputy Premier of South Australia from 1979 to 1982.  Goldsworthy represented the House of Assembly seat of Kavel for the Liberal and Country League and Liberal Party of Australia from 1970 to 1992.  Before entering Parliament he was a farmer and teacher.  He was also a member of University of Adelaide Council 1970–1973.  He became deputy leader of the SA Liberals, and hence Deputy Leader of the Opposition, in 1975 when David Tonkin successfully challenged Bruce Eastick's leadership.  As such, he became Deputy Premier when the Liberals won the 1979 state election, also serving as Minister of Mines and Energy, Services and Supply.  He remained deputy leader when the Liberals went back into opposition in 1982, returning to the backbench in 1989.

Tanya Plibersek: Tanya Joan Plibersek (born 2 December 1969) is an Australian politician who has been the Member of Parliament for Sydney since 1998, and the deputy leader of the opposition and deputy leader of the Labor Party since 2013.

Sam Basil: Sam Basil (born 16 November 1969) is a Papua New Guinean politician.  He has been a member of the National Parliament of Papua New Guinea since 2007, representing the electorate of Bulolo Open.  An outspoken member of the opposition during Michael Somare's government, he served as Minister for National Planning in the first ten months of Peter O'Neill's government, before returning to opposition after the 2012 election.  He has been Deputy Opposition Leader since 2012 and the leader of the Pangu Party since 2014.  Prior to joining Pangu, he was deputy leader of the People's Progress Party (2007-2011) and deputy leader of the Papua New Guinea Party (2011-2014).

List of Deputy Leaders of the Liberal Democrats: This is a list of Deputy Leader of the Liberal Democrats, a political party in the United Kingdom.  The position of deputy leader has never formally existed in the party constitution, however since the party's foundation, the Liberal Democrat parliamentary group in the House of Commons have usually elected a deputy leader.  Although often referred to as the deputy leader of the Liberal Democrats, this post is actually only deputy leader of the Liberal Democrat parliamentary group in the House of Commons and not deputy leader of the Liberal Democrats as a whole.

Julie Bishop: Julie Isabel Bishop (born 17 July 1956) is an Australian politician, serving as the Minister for Foreign Affairs since 2013, and the Deputy Leader of the Liberal Party since 2007.  Bishop grew up in the Adelaide Hills and was educated at the St Peter's Collegiate Girls' School, later attending the University of Adelaide.  Prior to entering politics, she was a managing partner of major Australian law firm Clayton Utz.

Mal Bryce: Malcolm John "Mal" Bryce AO (born 10 April 1943) is a former Australian politician who was a Labor Party member of the Legislative Assembly of Western Australia from 1971 to 1988, representing the seat of Ascot.  He was deputy leader of the Labor Party from 1977 to 1980 and from 1981 to 1988, and served as deputy premier under Brian Burke.

George Weatherill (politician): George Weatherill (born 1936), often referred to as ″Bolshi-George″, was a former Australian politician and Deputy Leader of the South Australian Labor Party.  From 1986 until 2000 he represented the Australian Labor Party in the South Australian Legislative Council.

Michael Daley: Michael John Daley (born 1 November 1965), an Australian politician, is a member of the New South Wales Legislative Assembly representing Maroubra for the Australian Labor Party since 2005.  He is currently the Deputy Leader of the Opposition, Shadow Minister for Planning and Infrastructure, Shadow Minister for Gaming and Racing and Manager of Opposition Business.

Supporting paragraphs: Michael Coutts-Trotter Tanya Plibersek
Answer: married