Information: - Hertfordshire (often abbreviated Herts) is a county in southern England, bordered by Bedfordshire to the north, Cambridgeshire to the north-east, Essex to the east, Buckinghamshire to the west and Greater London to the south. For government statistical purposes, it is placed in the East of England region. - A "whodunit" or "whodunnit" (for "Who [has] done it?" or "Who did it?") is a complex, plot-driven variety of the detective story in which the audience is given the opportunity to engage in the same process of deduction as the protagonist throughout the investigation of a crime. The reader or viewer is provided with the clues from which the identity of the perpetrator may be deduced before the story provides the revelation itself at its climax. The investigation is usually conducted by an eccentric, amateur, or semi-professional detective. - England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west. The Irish Sea lies northwest of England and the Celtic Sea lies to the southwest. England is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain (which lies in the North Atlantic) in its centre and south; and includes over 100 smaller islands such as the Isles of Scilly, and the Isle of Wight. - London is the capital and most populous city of England and the United Kingdom, as well as the most populous city proper in the European Union. Standing on the River Thames in the south east of the island of Great Britain, London has been a major settlement for two millennia. It was founded by the Romans, who named it "Londinium". London's ancient core, the City of London, largely retains its medieval boundaries. Since at least the 19th century, "London" has also referred to the metropolis around this core, historically split between Middlesex, Essex, Surrey, Kent, and Hertfordshire, which today largely makes up Greater London, governed by the Mayor of London and the London Assembly. - The Mayor of London is an elected politician who, along with the London Assembly of 25 members, is accountable for the strategic government of Greater London. The current mayor is Sadiq Khan, who took up office on 9 May 2016. The position had been held by Ken Livingstone from the creation of the role on 4 May 2000 until he was defeated in 2008 by Boris Johnson, who served two terms before being succeeded by Khan. - Interrogation (also called questioning) is interviewing as commonly employed by law enforcement officers, military personnel, and intelligence agencies with the goal of eliciting useful information. Interrogation may involve a diverse array of techniques, ranging from developing a rapport with the subject, to outright torture. - In ordinary language, a crime is an unlawful act punishable by a state or other authority. The term "crime" does not, in modern criminal law, have any simple and universally accepted definition, though statutory definitions have been provided for certain purposes. The most popular view is that crime is a category created by law; in other words, something is a crime if declared as such by the relevant and applicable law. One proposed definition is that a crime or offence (or criminal offence) is an act harmful not only to some individual or individuals but also to a community, society or the state ("a public wrong"). Such acts are forbidden and punishable by law. - A detective is an investigator, usually a member of a law enforcement agency. Some are private persons, and may be known as private investigators, as "The Eye That Never Sleeps", the motto of the Pinkerton Detective Agency or shortened to simply "private eyes". - A police force is a constituted body of persons empowered by the state to enforce the law, protect property, and limit civil disorder. Their powers include the legitimized use of force. The term is most commonly associated with police services of a sovereign state that are authorized to exercise the police power of that state within a defined legal or territorial area of responsibility. Police forces are often defined as being separate from military or other organizations involved in the defense of the state against foreign aggressors; however, gendarmerie are military units charged with civil policing. - The European Union (EU) is a political and economic union of member states that are located primarily in Europe. It has an area of , and an estimated population of over 510 million. The EU has developed an internal single market through a standardised system of laws that apply in all member states. EU policies aim to ensure the free movement of people, goods, services, and capital within the internal market, enact legislation in justice and home affairs, and maintain common policies on trade, agriculture, fisheries, and regional development. Within the Schengen Area, passport controls have been abolished. A monetary union was established in 1999 and came into full force in 2002, and is composed of 19 EU member states which use the euro currency. - Detective fiction is a subgenre of crime fiction and mystery fiction in which an investigator or a detectiveeither professional or amateurinvestigates a crime, often murder. - A search warrant is a court order that a magistrate, judge or Supreme Court official issues to authorize law enforcement officers to conduct a search of a person, location, or vehicle for evidence of a crime and to confiscate any evidence they find. In most countries a search warrant cannot be issued in aid of civil process. - An inverted detective story, also known as a "howcatchem", is a murder mystery fiction structure in which the commission of the crime is shown or described at the beginning, usually including the identity of the perpetrator. The story then describes the detective's attempt to solve the mystery. There may also be subsidiary puzzles, such as why the crime was committed, but those are cleared up along the way. This format is the opposite of the more typical "whodunit", where all of the details of the perpetrator of the crime are not revealed until the story's climax. - Sergeant Cork is a British detective television series which first aired between 1963 and 1968 on ATV . It was a police procedural show that followed the efforts of two police officers and their battle against crime in Victorian London . In all 66 hour - long episodes were aired during the five year run , although the last episode was not broadcast until January 1968 , 16 months after the others . Journalist Tom Sutcliffe has been credited as a first example of the use of the Victorian - era policeman in a television crime series . A 1969 review in The Age opined that rather than suspense , the strengths of the series were its '' ( e ) xcellent period settings and wonderfully thick pea - soupers '' which '' add up to splendid evocative stuff '' , as well as the performance of star John Barrie . At no time during the whole series is Sergeant Cork 's first name given . - A private investigator (often abbreviated to PI and informally called a private eye), a private detective, or inquiry agent, is a person who can be hired by individuals or groups to undertake investigatory law services. Private detectives/investigators often work for attorneys in civil and criminal cases. - The police procedural, or police crime drama, is a subgenre of detective fiction that attempts to convincingly depict the activities of a police force as they investigate crimes. Although traditional detective novels usually concentrate on a single crime, police procedurals frequently depict investigations into several unrelated crimes in a single story. Traditional mysteries usually adhere to the convention of having the criminal's identity concealed until the climax (the so-called whodunit), whereas in police procedurals, the perpetrator's identity is often known to the audience from the outset (the inverted detective story). Police procedurals depict a number of police-related topics such as forensics, autopsies, the gathering of evidence, the use of search warrants, and interrogation. - The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union. Given the paragraphs above, decide what entity has the relation 'genre' with 'detective fiction'.
The answer to this question is:
sergeant cork