Question: who picks the prime minister in the country the company that owns Virgin Holidays Cruises is from?

full_context: Document 1: Virgin Holidays Cruises: Virgin Holidays Cruises is a company owned by Virgin Group and is part of Virgin Holidays, headquartered in Crawley. The company specialises in package deals with cruises provided by other cruise lines.
Document 2: Prime Minister of Canada: Prime Minister of Canada Logo of the Prime Minister of Canada Incumbent Justin Trudeau since November 4, 2015 Executive Branch of the Government of Canada Office of the Prime Minister Style The Right Honourable (formal) Prime Minister (informal) His Excellency (diplomatic) Abbreviation PM Member of Queen's Privy Council Cabinet Parliament Reports to Monarch Governor General Parliament Residence 24 Sussex Drive (under renovation) Harrington Lake (seasonal) Rideau Cottage (temporary) Seat 80 Wellington St, Ottawa, ON K1P 5K9 Appointer Governor General Term length At Her Majesty's pleasure Constituting instrument None (constitutional convention) Inaugural holder Sir John A. Macdonald Formation July 1, 1867 Deputy Deputy Prime Minister of Canada (vacant) Salary $347,400 CAD (2018) Website www.pm.gc.ca
Document 3: Avalon Waterways: Avalon Waterways is a river cruise company owned by the Globus family of brands and offers cruises in Europe, China, Southeast Asia, the United States, South America and the Galápagos Islands. The company became a member of Cruise Lines International Association (CLIA) in August 2009.
Document 4: Virgin Drinks: After thirteen years, the brand started to massively decline as rival Coca-Cola had made exclusive distribution deals in big stores and restaurants. This led to Virgin only being sold in select supermarkets and local stores. Virgin Group decided it could not compete with cola rivals. In 2007, Virgin Drinks sold over the rights of Virgin Cola to a company called Silver Spring Soft Drinks. Virgin Vodka was discontinued when Virgin Drinks failed to find a buyer. Virgin Drinks were made defunct in 2007.
Document 5: Prime Minister of Australia: Prime Minister of Australia Commonwealth Coat of Arms Incumbent Malcolm Turnbull since 15 September 2015 Government of Australia Department of the Prime Minister and Cabinet Style The Honourable (formal) Prime Minister (spoken) His / Her Excellency (in international correspondence) Member of Cabinet National Security Committee Federal Executive Council Reports to Parliament, Governor - General Residence The Lodge Kirribilli House Seat Canberra Appointer Governor - General of Australia by convention, based on appointee's ability to command confidence in the House of Representatives Term length At the Governor - General's pleasure contingent on the Prime Minister's ability to command confidence in the lower house of Parliament Inaugural holder Edmund Barton Formation 1 January 1901 Deputy Michael McCormack Salary $527,852 (AUD) Website pm.gov.au
Document 6: Prime Minister of the United Kingdom: The Prime Minister of the United Kingdom is the head of Her Majesty's Government in the United Kingdom. The Prime Minister (informally abbreviated to PM) and Cabinet (consisting of all the most senior ministers, most of whom are government department heads) are collectively accountable for their policies and actions to the Monarch, to Parliament, to their political party and ultimately to the electorate. The office is one of the Great Offices of State. The current holder of the office, Theresa May, leader of the Conservative Party, was appointed by the Queen on 13 July 2016.
Document 7: New Mexico Spaceport Authority: The state of New Mexico has privatized the operations of Spaceport America; the spaceport will be operated by Virgin Galactic, a component of the Virgin Group of global companies operated by Sir Richard Branson. While the Spaceport Authority will exercise public-sector oversight, Virgin Galactic will be the "anchor tenant" of the spaceport.
Document 8: Holland America Line: Holland America Line is a British / American - owned cruise line, a subsidiary of Carnival Corporation & plc. Originating in the Netherlands, the company is now based in Seattle, United States.
Document 9: Virgin Galactic: Virgin Galactic is a British spaceflight company within the Virgin Group. It is developing commercial spacecraft and aims to provide suborbital spaceflights to space tourists and suborbital launches for space science missions. Virgin Galactic plans to provide orbital human spaceflights as well. SpaceShipTwo, Virgin Galactic's suborbital spacecraft, is air launched from beneath a carrier airplane known as White Knight Two.
Document 10: Virgin Games: Virgin Games is a company that provides online gambling services, predominantly in the United Kingdom, that licences the brand from Sir Richard Branson's Virgin Enterprises.
Document 11: Very (online retailer): Very (also known as Very.co.uk) is a British online retailer with headquarters in Speke, Liverpool. The brand was launched in the UK in July 2009 as part of Shop Direct. Very had formerly been known as Littlewoods Direct.
Document 12: Government of the United Kingdom: The current prime minister is Theresa May, who took office on 13 July 2016. She is the leader of the Conservative Party, which won a majority of seats in the House of Commons in the general election on 7 May 2015, when David Cameron was the party leader; although at the last general election she failed to secure a majority government. Prior to this, Cameron and the Conservatives led a coalition from 2010 to 2015 with the Liberal Democrats, in which Cameron was prime minister.
Document 13: MSC Cruises: MSC Cruises is a global cruise line that was founded in Italy, is registered in Switzerland, and has its headquarters in Geneva. MSC Cruises is the world's largest privately owned cruise company, employing 16,300 people worldwide and having offices in 45 countries as of July 2014. MSC Cruises (Italian: MSC Crociere S. p.A.) is part of the Mediterranean Shipping Company S.A. (MSC), the world's second biggest container shipping operator.
Document 14: Southampton: The importance of Southampton to the cruise industry was indicated by P&O Cruises's 175th anniversary celebrations, which included all seven of the company's liners visiting Southampton in a single day. Adonia, Arcadia, Aurora, Azura, Oceana, Oriana and Ventura all left the city in a procession on 3 July 2012.
Document 15: Prime Minister of the United Kingdom: Prime Minister of the United Kingdom of Great Britain and Northern Ireland Royal Arms used by Her Majesty's Government Incumbent Theresa May since 13 July 2016 (2016 - 07 - 13) Government of the United Kingdom Office of the Prime Minister Style Prime Minister (informal) The Right Honourable (within the UK and the Commonwealth) His / Her Excellency (in international correspondence) Member of Cabinet Privy Council European Council British -- Irish Council Reports to Parliament Residence 10 Downing Street Chequers Seat Westminster Appointer Monarch of the United Kingdom Term length At Her Majesty's pleasure Inaugural holder Sir Robert Walpole as First Lord of the Treasury and de facto first Prime Minister. Formation 4 April 1721 Salary £151,451 annual, including £76,011 MP's salary Website Official website
ground_truth: Monarch of the United Kingdom
sub_queries: Virgin Holidays Cruises >> owned by Answer: Virgin Group
Virgin Group >> country Answer: United Kingdom
in United Kingdom who picks the prime minister Answer: Monarch of the United Kingdom