Q:Information:  - The Movement for Multi-party Democracy (MMD) is a political party in Zambia. Originally formed to oust the previous government, MMD controlled an absolute majority in parliament between 1991 and 2001, when its past leader, Frederick Chiluba was President of Zambia. Its election into power in 1991 ended the 27-year rule of President Kenneth Kaunda and his United National Independence Party (UNIP). It remained the dominant party within Zambian politics until the general elections of September 2011. It is a centre-left political party.  - The Socialist International (SI) is a worldwide association of political parties, most of which seek to establish democratic socialism. It consists mostly of democratic socialist, social-democratic and labour political parties and other organisations.  - Botswana , officially the Republic of Botswana, is a landlocked country located in Southern Africa. The citizens refer to themselves as "Batswana" (singular: "Motswana"). Formerly the British protectorate of Bechuanaland, Botswana adopted its new name after becoming independent within the Commonwealth on 30 September 1966. Since then, it has maintained a strong tradition of stable representative democracy, with a consistent record of uninterrupted democratic elections.  - The Republic of Zambia is a landlocked country in Southern Africa, neighbouring the Democratic Republic of the Congo to the north, Tanzania to the north-east, Malawi to the east, Mozambique, Zimbabwe, Botswana and Namibia to the south, and Angola to the west. The capital city is Lusaka, in the south-central part of Zambia. The population is concentrated mainly around Lusaka in the south and the Copperbelt Province to the northwest, the core economic hubs of the country.  - The Patriotic Front ( PF ) is the ruling political party in Zambia . The party was formed by Michael Sata as a breakaway party of the MMD in 2001 after the then - president Frederick Chiluba nominated Levy Mwanawasa as the MMD 's presidential candidate for 2001 elections . After several years as an opposition party the PF gained power in the 2011 general elections . The party is a consultative member of Socialist International , having been admitted in February 2013 .  - Namibia, officially the Republic of Namibia (German: ), is a country in southern Africa whose western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and east. Although it does not border Zimbabwe, a part of less than 200 metres of the Zambezi River (essentially a small bulge in Botswana to achieve a Botswana/Zambia micro-border) separates the two countries. Namibia gained independence from South Africa on 21 March 1990, following the Namibian War of Independence. Its capital and largest city is Windhoek, and it is a member state of the United Nations (UN), the Southern African Development Community (SADC), the African Union (AU), and the Commonwealth of Nations.  - Copperbelt Province in Zambia covers the mineral-rich Copperbelt, and farming and bush areas to the south. It was the backbone of the Northern Rhodesian economy during British colonial rule and fuelled the hopes of the immediate post-independence period, but its economic importance was severely damaged by a crash in global copper prices in 1973. The province adjoins Katanga province of the Democratic Republic of the Congo, which is similarly mineral-rich.  - Michael Chilufya Sata (6 July 1937  28 October 2014) was a Zambian politician who was the fifth President of Zambia, from 23 September 2011 until his death on 28 October 2014. A social democrat, he led the Patriotic Front (PF), a major political party in Zambia. Under President Frederick Chiluba, Sata was a minister during the 1990s as part of the Movement for Multiparty Democracy (MMD) government; he went into opposition in 2001, forming the PF. As an opposition leader, Sata  popularly known as "King Cobra"  emerged as the leading opposition presidential contender and rival to President Levy Mwanawasa in the 2006 presidential election, but was defeated. Following Mwanawasa's death, Sata ran again and lost to President Rupiah Banda in 2008.  - Frederick Jacob Titus Chiluba (April 30, 1943  June 18, 2011) was a Zambian politician who was the second President of Zambia from 1991 to 2002. Chiluba, a trade union leader, won the country's multi-party presidential election in 1991 as the candidate of the Movement for Multi-party Democracy (MMD), defeating long-time President Kenneth Kaunda. He was re-elected in 1996. As he was unable to run for a third term in 2001, former Vice President Levy Mwanawasa instead ran as the MMD candidate and succeeded him. After leaving office, Chiluba was the subject of a long investigation and trial regarding alleged corruption; he was eventually acquitted in 2009.  - Mozambique (or ), officially the Republic of Mozambique (or "") is a country in Southeast Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west, and Swaziland and South Africa to the southwest. It is separated from Madagascar by the Mozambique Channel to the east. The capital and largest city is Maputo (known as "Lourenço Marques" before independence).    Given the information above, choose from the list below the object entity that exhibits the relation 'political ideology' with the subject 'patriotic front '.  Choices: - commonwealth  - democracy  - democratic socialism  - independence  - opposition  - trade union  - tradition
A:
democratic socialism