Question: When did the father of Dahyabhai Patel die?

Context paragraphs:
paragraph_text: Ek Hota Vidushak (, ) is a 1992 Marathi film directed by Jabbar Patel and produced by National Film Development Corporation of India. The film stars Laxmikant Berde, Madhu Kambikar, Nilu Phule, Varsha Usgaonkar in lead roles and Mohan Agashe and Dilip Prabhavalkar in supporting roles.
title: Ek Hota Vidushak
paragraph_text: Die Oliver Pocher Show was a late-night show with Oliver Pocher shown by Sat.1 in Germany on Fridays. The show is a mix of late-night comedy and personality. Each broadcast begins with stand-up comedy. There are generally two celebrity guests. During the first season, Pocher's father Gerard frequently appeared on the show as a sidekick.
title: Die Oliver Pocher Show
paragraph_text: Yeh Hai Jalwa (, "This Is Magic") is a 2002 Bollywood comedy film directed by David Dhawan. It stars Salman Khan and Amisha Patel in lead roles, with Kader Khan, Rati Agnihotri, Rishi Kapoor, Anupam Kher, Rinke Khanna and Sanjay Dutt in supporting roles.
title: Yeh Hai Jalwa
paragraph_text: How Death Came to Earth is a 14-minute cutout animation film by Ishu Patel produced in 1971 by the National Film Board of Canada. The film deals with an Indian myth of creation, and is notable for its trippy visual style.
title: How Death Came to Earth
paragraph_text: The inaugural officeholder was the British banker Osborne Smith, while C.D. Deshmukh was the first Indian governor. The position is currently held by Urjit Patel, who took over from Raghuram Rajan on 4 September 2016. j
title: List of governors of the Reserve Bank of India
paragraph_text: Hardik Patel was born on 20 July 1993 in a Gujarati Patel family to Bharat and Usha Patel. In 2004, his parents moved to Viramgam. Hardik studied from Class VI to Class VIII at Divya Jyot School in Viramgam, before moving to K B Shah Vinay Mandir, where he studied until Class XII. He was a poor student and a cricket enthusiast.
title: Hardik Patel
paragraph_text: The Bardoli Satyagraha of 1928, in the state of Gujarat, India during the period of the British Raj, was a major episode of civil disobedience and revolt in the Indian Independence Movement. The movement was eventually led by Vallabhbhai Patel, and its success gave rise to Patel becoming one of the main leaders of the independence movement.
title: Bardoli Satyagraha
paragraph_text: The Woman in the Advocate's Gown (German: Die Frau im Talar) is a 1929 Norwegian-German silent drama film directed by Adolf Trotz and starring Aud Egede-Nissen, Paul Richter and Fritz Kortner. A female lawyer commits suicide after discovering the forgery case she is prosecuting had been committed by her own father.
title: The Woman in the Advocate's Gown
paragraph_text: Vallabhbhai  Patel (31 October 1875 – 15 December 1950), popularly known as Sardar Patel, was an Indian politician. He served as the first Deputy Prime Minister of India. He was an Indian barrister and statesman, a senior leader of the Indian National Congress and a founding father of the Republic of India who played a leading role in the country's struggle for independence and guided its integration into a united, independent nation. In India and elsewhere, he was often called Sardar, meaning "chief" in Hindi, Urdu, and Persian. He acted as Home Minister during the political integration of India and the Indo-Pakistani War of 1947.Patel was raised in the countryside of state of Gujarat. He was a successful lawyer. He subsequently organised peasants from Kheda, Borsad, and Bardoli in Gujarat in non-violent civil disobedience against the British Raj, becoming one of the most influential leaders in Gujarat. He was appointed as the 49th President of Indian National Congress, organising the party for elections in 1934 and 1937 while promoting the Quit India Movement.
title: Vallabhbhai Patel
paragraph_text: Born in Navsari in Gujarat, Ketan Mehta did his schooling from Sardar Patel Vidyalaya, Delhi and later graduated in film direction from Film and Television Institute of India, Pune.
title: Ketan Mehta
paragraph_text: Jantar-Mantar is a public art work by sculptor Narendra Patel, located on the campus of the University of Wisconsin–Milwaukee (UWM) on the east side of Milwaukee, Wisconsin.
title: Jantar-Mantar
paragraph_text: Die Feiertage Israels, Die jüdischen Feiertage in er Sicht der Tradition (Herchen Verlag, Frankfurt am Main, vol. I, 1993, p. 556, vol. II, 1994, p. 557)
title: Ahron Daum
paragraph_text: Dahyabhai Patel (1906–1973) was the son of Indian leader Sardar Vallabhbhai Patel, an and later a member of the Parliament of India. Educated in Bombay, Dahyabhai Patel graduated from the Gujarat Vidyapith and began working for an insurance company, and settled in Bombay. His first wife Yashoda died, leaving him his son Bipin. He later married Bhanumati and had another son, Gautam. His flat on Sandhurst Road and later Prabhadevi in Bombay was the frequent residence of Sardar Patel. Although primarily a businessman, Patel participated in the Quit India movement and was imprisoned from 1942 to 1944.
title: Dahyabhai Patel
paragraph_text: Vadeli is a small village in Borsad taluka, Anand district, Gujarat, India. It is located around 8 km from Borsad. It is surrounded by the fertile Charotar region which largely produces tobacco, rice, cotton, lady finger, Tomato, Potato and other agricultural crops. THAKOR owns the majority of business, majority of Patels are from 60 house community that dominates Amul Sahkari Madali Milk Dairy and Patel bazar. Other major communities are Darbar, Thakor, Brahmins and Christians. Gandhiji passed through Vadeli Patiya in Dandi March satyagrah, Borsad satyagraha.
title: Vadeli
paragraph_text: Bakor Patel is children's literature character created by Hariprasad Vyas for funny animal stories published by "Gandiv", a children's biweekly in Gujarati language published by Gandiv Sahitya Mandir, Surat, Gujarat, India. The humorous stories about Bakor Patel written by Vyas which first appeared in 1936 and continued till 1955. The stories include other anthropomorphic characters including his wife, Shakri Patlani. The stories were accompanied with an illustration and title printed in typical typography which were drawn by two Surat based artist brothers, Tansukh and Mansukh. The character became the icon of Gujarati children's literature and was adapted into a children's play.
title: Bakor Patel
paragraph_text: Samna is a 1974 Marathi-language crime drama directed by Jabbar Patel. It was entered into the 25th Berlin International Film Festival.
title: Samna (film)
paragraph_text: Bholabhai Patel was an Indian Gujarati author. He taught numerous languages at Gujarat University and did comparative studies of literature in different languages. He translated extensively and wrote essays and travelogues. He was awarded the Padma Shri in 2008.
title: Bholabhai Patel
paragraph_text: Die Hard Trilogy 2: Viva Las Vegas is a video game developed by n-Space and published by Fox Interactive for Microsoft Windows and PlayStation in 2000. It is a sequel to "Die Hard Trilogy", which was based on the "Die Hard" series of action movies. Like its predecessor, the game features three distinct genres; a third-person shooter, a light gun game, and an action driving game. However, unlike "Die Hard Trilogy", which featured three separate storylines based on the first three "Die Hard" films, "Die Hard Trilogy 2" features a single original storyline that alternates between the three genres throughout the levels.
title: Die Hard Trilogy 2: Viva Las Vegas
paragraph_text: Quentin Roosevelt (November 19, 1897 – July 14, 1918) was the youngest son of President Theodore Roosevelt and First Lady Edith Roosevelt. Family and friends agreed that Quentin had many of his father's positive qualities and few of the negative ones. Inspired by his father and siblings, he joined the United States Army Air Service where he became a pursuit pilot during World War I. Extremely popular with his fellow pilots and known for being daring, he was killed in aerial combat over France on Bastille Day (July 14), 1918. As of 2019, he is the only child of a US President to die in combat.
title: Quentin Roosevelt
paragraph_text: Upen Patel (born 16 August 1982) is a model and film actor working in India. In addition to working in Bollywood films, he has participated in several television reality shows including "Bigg Boss 8" and "Nach Baliye 7".
title: Upen Patel

Reasoning steps:
Dahyabhai Patel >> father >>>> Vallabhbhai Patel
When did Vallabhbhai Patel die? >>>> 15 December 1950

Answer: spans: 15 December 1950