Question: When did the country where Pieter van Abeele was born refuse to surrender to Namibia?

full_context: Document 1: Boschmanskop No 1 Dam: Boschmanskop No 1+2 Dam, is an earth-fill type dam on the Woes-Alleen River, near Middelburg, Mpumalanga, South Africa. It was established in 1995. Its primary purpose is flood control and it is owned by Optimum Colliery Pullen's Hope.
Document 2: Namibia: The dry lands of Namibia were inhabited since early times by San, Damara, and Namaqua, and since about the 14th century AD by immigrating Bantu who came with the Bantu expansion. Most of the territory became a German Imperial protectorate in 1884 and remained a German colony until the end of World War I. In 1920, the League of Nations mandated the country to South Africa, which imposed its laws and, from 1948, its apartheid policy. The port of Walvis Bay and the offshore Penguin Islands had been annexed by the Cape Colony under the British crown by 1878 and had become an integral part of the new Union of South Africa at its creation in 1910.
Document 3: Molteno Dam: Molteno Dam is a small but historic dam, on the lower slopes of Table Mountain in Western Cape, South Africa. Still in service, it was established in 1877 and is now located in the suburb of Oranjezicht, Cape Town.
Document 4: Kwena Dam: Kwena Dam is a combined gravity & arch type dam located on the Crocodile River, near Lydenburg, Mpumalanga province, South Africa. It was established in 1984 and it serves mainly for irrigation purposes. The hazard potential of the dam has been ranked high (3).
Document 5: Namibia: South Africa occupied the colony in 1915 after defeating the German force during World War I and administered it from 1919 onward as a League of Nations mandate territory. Although the South African government desired to incorporate 'South-West Africa' into its territory, it never officially did so, although it was administered as the de facto 'fifth province', with the white minority having representation in the whites-only Parliament of South Africa, as well as electing their own local administration the SWA Legislative Assembly. The South African government also appointed the SWA administrator, who had extensive powers. Following the League's replacement by the United Nations in 1946, South Africa refused to surrender its earlier mandate to be replaced by a United Nations Trusteeship agreement, requiring closer international monitoring of the territory's administration (along with a definite independence schedule). The Herero Chief's Council submitted a number of petitions to the UN calling for it to grant Namibia independence during the 1950s. During the 1960s, when European powers granted independence to their colonies and trust territories in Africa, pressure mounted on South Africa to do so in Namibia. In 1966 the International Court of Justice dismissed a complaint brought by Ethiopia and Liberia against South Africa's continued presence in the territory, but the U.N. General Assembly subsequently revoked South Africa's mandate, while in 1971 the International Court of Justice issued an "advisory opinion" declaring South Africa's continued administration to be illegal.
Document 6: Dutch oven: During the 17th century, brass was the preferred metal for English cookware and domestic utensiles, and the Dutch produced it at the lowest cost, which, however, was still expensive. In 1702, Abraham Darby was a partner in the Brass Works Company of Bristol, which made malt mills for breweries. Apparently in 1704, Darby visited the Netherlands, where he studied the Dutch methods of working brass, including the casting of brass pots. Darby learned that when making castings, the Dutch used molds made of sand rather than the traditional loam and clay, and this innovation produced a finer finish on their brassware. In 1706 he started a new brass mill in the Baptist Mills section of Bristol. There Darby realized that he could sell more kitchen wares if he could replace brass with a cheaper metal, namely, cast iron. Initial experiments to cast iron in sand molds were unsuccessful, but with the aid of one of his workers, James Thomas, a Welshman, he succeeded in casting iron cookware. In 1707 he obtained a patent for the process of casting iron in sand, which derived from the Dutch process. Thus the term ``Dutch oven ''has endured for over 300 years, since at least 1710.
Document 7: Pieter Franciscus Dierckx: He also worked in the historic-Romantice genre, taking inspiration from the leading Romantic painter Henri Leys. Franz Courtens held Pieter Dierckx in high esteem.  He recommended Dierckx for an important commission in the town of Lokeren: two paintings for the town hall showing historic events. The first one depicts the emperor Charles V handing over the privilege of holding a market every week to the deputies of the city in 1555. The other panel shows the foundation of the Saint Sebastian guild by Albrecht and Isabella in 1613, while issuing the privilege for holding a yearly market. These are big paintings, confirming the greatness of the  school of Leys. In addition they show that Pieter Dierckx has the ability to expertly picture an historic event.
Document 8: Dwight D. Eisenhower: The development of the appreciation medals was initiated by the White House and executed by the Bureau of the Mint through the U.S. Mint in Philadelphia. The medals were struck from September 1958 through October 1960. A total of twenty designs are cataloged with a total mintage of 9,858. Each of the designs incorporates the text "with appreciation" or "with personal and official gratitude" accompanied with Eisenhower's initials "D.D.E." or facsimile signature. The design also incorporates location, date, and/or significant event. Prior to the end of his second term as President, 1,451 medals were turned-in to the Bureau of the Mint and destroyed. The Eisenhower appreciation medals are part of the Presidential Medal of Appreciation Award Medal Series.
Document 9: Willem Zijderveld: Willem Zijderveld, a Dutch painter, was born at Amsterdam in 1796. In the Haarlem Museum there is a picture by him representing Jan van Oldenbarnevelt presenting to Arent Meyndertsz Fabricius the silver-gilt cup voted to the latter by the States of Holland for his services at the siege of Ostend. Zijderweld died at Amsterdam, 24 December 1840.
Document 10: Nooitgedacht Dam: Nooitgedacht Dam is an earth-fill type dam located on the Komati River in South Africa. It was established in 1962 and serves mainly for irrigation purposes as well as municipal and industrial use. The hazard potential of the dam has been ranked high (3).
Document 11: Namibia: Uprisings and demands by African leaders led the UN to assume direct responsibility over the territory. It recognised the South West Africa People's Organisation (SWAPO) as the official representative of the Namibian people in 1973. Namibia, however, remained under South African administration during this time as South-West Africa. Following internal violence, South Africa installed an interim administration in Namibia in 1985. Namibia obtained full independence from South Africa in 1990, with the exception of Walvis Bay and the Penguin Islands, which remained under South African control until 1994.
Document 12: Theewaterskloof Dam: Theewaterskloof Dam is an earth-fill type dam located on the Sonderend River near Villiersdorp, Western Cape, South Africa. Administratively it is located within Theewaterskloof Local Municipality. It was established in 1978 and is the largest dam in the Western Cape Water Supply System with a capacity of 480 million cubic metres, about 41% of the water storage capacity available to Cape Town, which has a population of over 4 million people. The dam mainly serves for municipal and industrial use as well as for irrigation purposes. The hazard potential of the dam has been ranked high (3).
Document 13: Languages of Namibia: Namibia, despite its scant population, is home to a wide diversity of languages, from multiple language families: Indo - European, Bantu, and the various Khoisan families. When Namibia was administered by South Africa, Afrikaans, German, and English enjoyed an equal status as official languages. Upon Namibian independence in 1990, English was enshrined as the nation's sole official language in the constitution of Namibia. German and Afrikaans were stigmatised as having colonial overtones, while the rising of Mandela's Youth League and the 1951 Defiance Campaign spread English among the masses as the language of the campaign against apartheid.
Document 14: Eswatini: In 1903, after British victory in the Anglo-Boer war, Swaziland became a British protectorate. Much of its early administration (for example, postal services) being carried out from South Africa until 1906 when the Transvaal colony was granted self-government. Following this, Swaziland was partitioned into European and non-European (or native reserves) areas with the former being two-thirds of the total land. Sobhuza's official coronation was in December 1921 after the regency of Labotsibeni after which he led an unsuccessful deputation to the Privy council in London in 1922 regarding the issue of the land.
Document 15: Pieter van Abeele: Van Abeele was born in Middelburg. He perfected the technique of pressing hollow medals. He created the two sides of the medal separately and combined them with a ring of metal. His works are said to be the best of their time, and consist mostly of memorial and portrait medals. They depict several members of the House of Orange, Admiral Maarten Tromp, Jan Wolfert van Brederode, Charles X of Sweden and Charles II of England. He also made commemorative medals for the destruction of the English fleet and the peace of 1667, as well as one showing the granting of the coat of arms to the city of Amsterdam by Count William II of Holland and Emperor Maximilian I. He died in Amsterdam.
ground_truth: 1946
sub_queries: Pieter van Abeele >> place of birth Answer: Middelburg
Middelburg >> country Answer: South Africa
When did South Africa refuse to surrender Namibia? Answer: 1946