Question: When did Cilia Van Dijk's husband die?

Knowledge 1: Cilia van Dijk
Cilia van Dijk-Lieshout (born 22 November 1941 in Uden) is a Dutch film producer.Her film work includes "Frieze FrameI Move, so I Am", and "Anna & BellaAnna & Bella" earned her an Academy Award for Best Animated Short Film.In 1963 she married Gerrit van Dijk, a Dutch animator.In 1978 she created Animated People, a distributor for Dutch animation films. [SEP] Knowledge 2: Gerrit van Dijk
Gerrit van Dijk (5 December 1938 – 4 December 2012) was a Dutch animator, film maker, actor and painter.
Knowledge 1: Cilia van Dijk
Cilia van Dijk-Lieshout (born 22 November 1941 in Uden) is a Dutch film producer.Her film work includes "Frieze FrameI Move, so I Am", and "Anna & BellaAnna & Bella" earned her an Academy Award for Best Animated Short Film.In 1963 she married Gerrit van Dijk, a Dutch animator.In 1978 she created Animated People, a distributor for Dutch animation films. [SEP] Knowledge 2: Virgil van Dijk
Virgil van Dijk (born 8 July 1991) is a Dutch professional footballer who plays as a centre-back for English club Liverpool and captains the Netherlands national team.Considered to be one of the best defenders in the world, he is known for his strength, leadership and aerial ability.In 2019 he was named the UEFA Men's Player of the Year, and finished runner-up for the Ballon d'Or and The Best FIFA Men's Player.After beginning his professional career with Groningen, Van Dijk moved to Celtic in 2013, where he won the Scottish Premiership and was named in the PFA Scotland Team of the Year in both of his seasons with the club, also winning the Scottish League Cup in the latter.In September 2015, he joined Premier League side Southampton before signing for Liverpool in January 2018 for £75 million, a world record transfer fee for a defender at the time.Van Dijk was involved in reaching the 2018 UEFA Champions League Final during his first spring at Liverpool.In his first full season at the club Van Dijk was named the PFA Player of the Year and the Premier League Player of the Season for the 2018–19 season.Van Dijk starred as Liverpool won the 2019 UEFA Champions League Final where he was named man of the match.The following season he played in the club’s victorious 2019 FIFA Club World Cup Final.Van Dijk made his international debut for the Netherlands in 2015 and became captain of his country in 2018.In 2018, he scored his first international goal in a 3–0 win over European champions Portugal.He later captained them to the inaugural 2019 UEFA Nations League Final where they finished runners-up.
Knowledge 1: Cilia van Dijk
Cilia van Dijk-Lieshout (born 22 November 1941 in Uden) is a Dutch film producer.Her film work includes "Frieze FrameI Move, so I Am", and "Anna & BellaAnna & Bella" earned her an Academy Award for Best Animated Short Film.In 1963 she married Gerrit van Dijk, a Dutch animator.In 1978 she created Animated People, a distributor for Dutch animation films. [SEP] Knowledge 2: Kees van Dijk
Cornelis Pieter "Kees" van Dijk (25 July 1931 – 29 December 2008) was a Dutch politician of the Christian Historical Union (CHU) party and later the Christian Democratic Appeal (CDA) party and economist.Van Dijk worked as student researcher at the Erasmus University Rotterdam from June 1954 until July 1956.Van Dijk worked as an accountant at a bank in Johannesburg from July 1956 until April 1961 and as a civil servant for the Ministry of Foreign Affairs as an attaché in the Netherlands New Guinea from April 1961 until October 1962.Van Dijk worked as a financial analyst for the Organisation for Economic Co-operation and Development (OECD) in Paris from October 1962 until February 1968 and the World Bank in Washington, D.C. from February 1968 until June 1977.Van Dijk also worked as a teacher for the intelligence and security agency Domestic Security Service (BVD) from August 1963 until December 1967.Van Dijk was elected as a Member of the House of Representatives after the election of 1977, taking office on 8 June 1977.After the election of 1981Van Dijk was appointed as Minister for Development Cooperation in the Cabinet Van Agt II, taking office on 11 September 1981.The Cabinet Van Agt II fell just seven months into its term on 12 May 1982 and continued to serve in a demissionary capacity until it was replaced by the caretaker Cabinet Van Agt III with Van Dijk continuing as Minister for Development Cooperation, taking office on 29 May 1982.After the election of 1982 Van Dijk returned as a Member of the House of Representatives, taking office on 16 September 1982.Following the cabinet formation of 1982Van Dijk was not giving a ministerial post in the new cabinet and the Cabinet Van Agt III was replaced by the Cabinet LubbersI on 4 November 1982.After the election of 1986 Van Dijk was appointed as Minister of the Interior in the Cabinet Lubbers II, taking office on 14 July 1986.Van Dijk took a medical leave of absence from 26 January 1987 until 6 May 1987 during which Minister of Justice Frits Korthals Altes served as acting Minister of the Interior from 26 January 1987 until 3 February 1987 followed by Minister of Social Affairs and Employment Jan de Koning from 3 February 1987 until 6 May 1987.In April 1989 Van Dijk announced that he would not stand for the election of 1989.Van Dijk remained in active politics, he was elected as a Member of the Senate after the Senate election of 1991, serving from 11 June 1991 until 8 June 1999.Van Dijk also became active in the private sector and public sector and occupied numerous seats as a corporate director and nonprofit director on several boards of directors and supervisory boards(Douwe Egberts, Netherlands Economic Institute, Edmund Burke Foundation, Stichting Pensioenfonds Zorg en Welzijn, International Statistical Institute, European Cultural Foundation and Smit International) and served on several and councils on behalf of the government (Scientific Council for Government Policy, Advisory Council for Spatial Planning and the Netherlands Foreign Investment Agency).Van Dijk was known for his abilities as a debater and manager.Van Dijk continued to comment on political affairs until his death.

Answer: 4 December 2012