Information: - Great Britain, also known as Britain, is a large island in the north Atlantic Ocean off the northwest coast of continental Europe. With an area of , Great Britain is the largest European island and the ninth-largest in the world. In 2011 the island had a population of about 61million people, making it the world's third-most populous island after Java in Indonesia and Honshu in Japan. The island of Ireland is situated to the west of it, and together these islands, along with over 1,000 smaller surrounding islands, comprise the British Isles archipelago. - Transport for London (TfL) is a local government body responsible for the transport system in Greater London, England. Its head office is in Windsor House in the City of Westminster. - London Midland is a train operating company in England, owned by Govia, operating the West Midlands franchise. - Silverlink was a train operating company in the United Kingdom owned by National Express Group that operated the North London Railways franchise from March 1997 until November 2007 . At the end of 2007 Silverlink Metro services were taken over by London Overground and Silverlink County services were taken over by London Midland . - 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. - The London Overground (also known as the Overground) is a suburban rail network in the United Kingdom. Established in 2007, it serves a large part of Greater London and parts of Hertfordshire, with 112 stations on several routes. The network forms part of the National Rail network, but under the franchise control and branding of Transport for London (TfL). Operation has been franchised to Arriva Rail London since 13 November 2016. - Govia is a transport company based in the United Kingdom. It was formed in November 1996 as a joint venture between Go-Ahead (65%) and Keolis (35%) to bid for rail franchises during the privatisation of British Rail. - A train operating company (TOC) is a business operating passenger trains on the railway system of Great Britain under the collective National Rail brand. TOCs have existed since the privatisation of the network under the Railways Act 1993. - The Railways Act 1993 (c 43) was introduced by John Major's Conservative government and passed on 5 November 1993. It provided for the restructuring of the British Railways Board (BRB), the public corporation that owned and operated the national railway system. A few residual responsibilities of the BRB remained with BRB (Residuary) Ltd. - In Great Britain, National Rail is the trading name licensed for use by the Rail Delivery Group, an unincorporated association whose membership consists of the passenger train operating companies (TOCs) of Great Britain that run the passenger services previously provided by the British Railways Board, from 1965 using the brand name British Rail. National Rail generally does not include services that do not have a BR history; this distinction is important because National Rail services share a ticketing structure and inter-availability that do not necessarily extend to other services. The name and the accompanying double arrow symbol are the intellectual property of the Secretary of State for Transport. Given the paragraphs above, decide what entity has the relation 'instance of' with 'transport company'.
Ans: silverlink

Information: - Matt Visser is a mathematics Professor at Victoria University of Wellington . His research interests include General relativity , Quantum field theory and Cosmology . Visser has produced a large number of research papers on the subject of wormholes , gravitational horizons and notably the emerging subject of acoustic metrics . He is the author of the reference book on the current state of wormhole theory , Lorentzian Wormholes -- from Einstein to Hawking ( 1996 ) and co-editor of Artificial Black Holes ( 2002 ) . - The University of New Zealand was New Zealand's sole degree-granting university from 1874 to 1961. It had a federal structure embracing several constituent institutions at various locations around New Zealand. After it was dissolved in 1961 New Zealand had four independent degree-granting universities and two associated agricultural colleges: the University of Otago (Dunedin), University of Canterbury (Christchurch), University of Auckland (Auckland), Victoria University of Wellington (Wellington), Canterbury Agricultural College (Lincoln) and Massey Agricultural College (Palmerston North). - Professor (commonly abbreviated as "prof.") is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, "professor" derives from Latin as a "person who professes" being usually an expert in arts or sciences, a teacher of the highest rank. - Expert is defined differently in varying academic fields. Psychology defines an expert using superior performance; sociology considers that expertise is a label given to an individual by a group and is interested in the power held by experts; philosophy stresses the kind of knowledge held by experts but not novices. Informally, an expert is someone widely recognized as a reliable source of technique or skill whose faculty for judging or deciding rightly, justly, or wisely is accorded authority and status by peers or the public in a specific well-distinguished domain. An expert, more generally, is a person with extensive knowledge or ability based on research, experience, or occupation and in a particular area of study. Experts are called in for advice on their respective subject, but they do not always agree on the particulars of a field of study. An expert can be believed, by virtue of credential, training, education, profession, publication or experience, to have special knowledge of a subject beyond that of the average person, sufficient that others may officially (and legally) rely upon the individual's opinion. Historically, an expert was referred to as a sage (Sophos). The individual was usually a profound thinker distinguished for wisdom and sound judgment. - Victoria University of Wellington is a university in Wellington, New Zealand. It was established in 1897 by Act of Parliament, and was a constituent college of the University of New Zealand. Given the paragraphs above, decide what entity has the relation 'country of citizenship' with 'new zealand'.
Ans: matt visser