Question: How many people are employed by the company owned by the world's youngest billionaire?

Context articles: Albert, 12th Prince of Thurn and Taxis
Katharina Andresen
Alexandra Andresen
Perenna Kei
Shrikant Verma
Ferd (company)
Robertsdale, Pennsylvania
2002 El Ayyat railway accident
Mübariz Mansimov
Evan Spiegel

Albert Maria Lamoral Miguel Johannes Gabriel, 12th Prince of Thurn and Taxis (Albert Fürst von Thurn und Taxis; born 24 June 1983), is a German aristocrat, businessman, and race car driver.
 He has been listed as the world's youngest billionaire many times since his father's death in 1990, first appearing on the list when he was age eight.
Katharina Gamlemshaug Andresen (born 21 May 1995) is a Norwegian heiress, and as of March 2016, the world's second youngest billionaire ($1.15 billion) as reported by "Forbes".
Alexandra Gamlemshaug Andresen (born 23 July 1996) is a Norwegian heiress, and as of 2016 , the world's youngest billionaire.
 Her net worth is estimated at $1.2 billion (£862 million).
Perenna Kei (, rendered as Kei Hoi Ting in Cantonese and Ji Kaiting in Mandarin pinyin; born 1990 in Hong Kong), is a Chinese businesswoman and billionaire.
 In 2014, "Forbes" named her the youngest billionaire in the world at age 24, with a net worth of US$1.3 billion.
 She previously used the name Ji Peili.
Shrikant Verma (18 September 1931 – 25 May 1986) was an Indian poet and a Member of Parliament from Madhya Pradesh as an INC candidate from 1976 to 1982 and 1982 to 1986.
 He was married to Veena Verma who was also a Member of Parliament from Madhya Pradesh.
 Verma's son Abhishek Verma is an Indian arms dealer and was declared youngest billionaire of India in 1997.
Ferd is a Norwegian holding company which holds partial ownership in companies within industry and finance as well as a real estate portfolio.
 The company has 37 employees and is owned by Johan H. Andresen and his two daughters Katharina and Alexandra; it was established in 2001.
 The group also has a number of venture and private equity holdings.
Robertsdale is an unincorporated community in Wood Township in southern Huntingdon County, Pennsylvania, United States.
 It is situated on Broad Top Mountain near the eastern slope.
 It was founded in 1872 as part of the construction of the East Broad Top Railroad and Coal Company as the original terminus and mining location.
 The town was created by the EBT's parent company, the Rockhill Iron and Coal Company, which operated most of the mines on the east side of the Broad Top Coal field.
 The initial focus of mining was the Houk Mine (renamed Rockhill Iron and Coal Mine #1) which predated the town, though as a much smaller producer.
 Later RI&C #5 became a large producer.
 Mines #2, #3 and #4 were in Robertsdale but were not large producers and operated only briefly.
 Later the EBT was extended to Woodvale, Alvan and new Alvan as the focus of mining moved along the coal seams, though Robertsdale remained the mining headquarters.
 Robertsdale was a typical coal ming town complete with company owned miner houses, a company store, a company owned water and power system and other company owned facilities.
 Coal mining and its support industries were the principal employers.
The El Ayyat train disaster happened at 02:00 on the morning of 20 February 2002 in an eleven-carriage passenger train travelling from Cairo to Luxor.
 A cooking gas cylinder exploded in the fifth carriage, creating a fire which engulfed seven third-class carriages, reducing them almost to cinders.
 The initial number of dead given by officials at the time was 383, all Egyptians.
 However, considering that seven carriages were burnt to the ground, and each carriage was packed with at least double the maximum carrying capacity of 150, this number is considered by many people to be a great underestimate.
 The dubious nature of the given death toll lies with the absence of a full passenger list; accounting for those missing was almost impossible at the time.
 In addition, the fire was so intense and the carriages so badly burned that many corpses had been reduced to ash.
 As there was no means of communication between the driver and the rear carriages, the driver did not know of the fire until about two hours after it had begun, resulting in many people, attempting to flee from the overcrowded carriages, jumping to their death.
 Some important Egyptians have commentated that the official number of 383 dead is grossly inaccurate and was an attempt to lessen the damage done to the reputation of the government.
 Many people consider a number of about 1000 deaths to be more accurate.
Mübariz Mansimov (Azerbaijani: "Mübariz Mənsimov" , legally Mübariz Gurbanoğlu; born March 22, 1968) is an Azerbaijani-born entrepreneur and the founder of Palmali Group of Companies, a major shipping company, as well of the Azerbaijani football club Khazar Lankaran.
 He became a naturalized Turkish citizen in 2006.
 He is currently listed on Forbes list of billionaires, the youngest billionaire in Turkey as of March 1, 2009.
 He has invested heavily in Turkey and owns Palmarina Yalikavak, which often has many of the world's billionaires accumulate here.
Evan Thomas Spiegel (born June 4, 1990) is an American Internet entrepreneur.
 He is the co-founder and CEO of the American multinational technology and social media company Snap Inc., which he created (as Snapchat Inc.) with Bobby Murphy and Reggie Brown while they were students at Stanford University.
 Spiegel was named the youngest billionaire in the world in 2015.