Question: What building in the London Docklands lays claim to being the site of the oldest riverside tavern? 

full_context: Document 1: Cubitt Town: Cubitt Town is an area on the Isle of Dogs in Tower Hamlets in London, England. It is on the east of the Isle, facing Greenwich across the River Thames. To the west is Millwall, to the northwest Canary Wharf and to the north, across the Blue Bridge, Blackwall. It is in Blackwall & Cubitt Town Ward of Tower Hamlets London Borough Council.
Document 2: Millbank Distillery: Millbank Distillery was a London gin distillery owned and operated by Seager Evans and Co.. It was located on Grosvenor Road on the North bank of the River Thames in Pimlico. The company's best known product, Seagers Gin, was produced here up until the early 20th century. Millbank Distillery is often confused with Thames Bank Distillery a slightly older distillery, founded in 1797 and located further west along the river. Thames Bank Distillery was owned by Octavius Smith & Company - it was located on Grosvenor Road - its rear boundary was Lupus Street and on either side of it were Glasgow Terrace and Turpentine Lane.
Document 3: Prospect of Whitby: The Prospect of Whitby is a historic public house on the banks of the Thames at Wapping in the London Borough of Tower Hamlets. It lays claim to being the site of the oldest riverside tavern, dating from around 1520.
Document 4: The Kentish Hotel: The Kentish Hotel is a tavern in Waiuku, New Zealand that lays claim to the longest continuous liquor licence in the country. The Kentish Hotel has stood the test of time as being one of the most famous established watering holes in the Franklin area since it was first granted its licence to sell liquor in 1853.
Document 5: Wapping: Wapping ( ) is a district in London Docklands, England, in the London Borough of Tower Hamlets. It is situated between the north bank of the River Thames and the ancient thoroughfare simply called The Highway. Wapping's proximity to the river has given it a strong maritime character, which it retains through its riverside public houses and steps, such as the Prospect of Whitby and Wapping Stairs.
Document 6: Ye Olde Cheshire Cheese: Ye Olde Cheshire Cheese is a Grade II listed public house at 145 Fleet Street, on Wine Office Court, City of London.
Document 7: Chiswick: Chiswick ( ) is a district of west London, England. Most of it is in the London Borough of Hounslow. Other parts of the W4 postcode area, including Chiswick Park tube station, Acton Green, and much of Bedford Park are in the London Borough of Ealing. It contains Hogarth's House, the former residence of the 18th-century English artist William Hogarth; Chiswick House, a neo-Palladian villa regarded as one of the finest in England; and Fuller's Brewery, London's largest and oldest brewery. It occupies a meander of the River Thames used for competitive and recreational rowing, with several rowing clubs on the river bank. The finishing post for the Boat Race is just downstream of Chiswick Bridge.
Document 8: London Docklands: London Docklands is the name for the riverfront and former docks in London, capital of the United Kingdom, based around east and south east London respectively. It forms part of the boroughs of Southwark, Tower Hamlets, Lewisham, Newham and Greenwich. The docks were formerly part of the Port of London, at one time the world's largest port. They have now been redeveloped principally for commercial and residential use. The name London Docklands was used for the first time in a government report on redevelopment plans in 1971 and has since become virtually universally adopted. It also created conflict between the new and old communities of the London Docklands.
Document 9: Three Mills Residential Moorings: Three Mills Residential Moorings is a community of twenty residential narrowboats moored on the Three Mills Wall River Weir near Three Mills in the East End of London. Historically a tidal stretch of water, the residential moorings were converted to non-tidal in preparation for the London 2012 Olympics by the construction of a weir
Document 10: The Flask, Hampstead: The Flask is a Grade II listed public house at 14 Flask Walk, Hampstead, London, on the site from where the trade in Hampstead mineral water was run, and which is mentioned in the eighteenth century novel "Clarissa". It has been owned by Young's Brewery since 1904.
Document 11: The Flask, Highgate: The Flask is a Grade II listed public house at 74–76 Highgate West Hill, Highgate, London. According to the 1936 "Survey of London", a pub known as The Flask has stood on this spot since "at least as early as 1663". The present buildings probably date from the early 18th century, and were partially rebuilt in about 1767 by William Carpenter. A Manorial court met there in the eighteenth century. The Flask is currently owned and operated by the London-based Fuller's Brewery.
Document 12: Princess Louise, Holborn: The Princess Louise is a public house situated on High Holborn, a street in central London. Built in 1872, it is best known for its well-preserved 1891 Victorian interior, with wood panelling and a series of booths around an island bar. It is a tied house owned by the Samuel Smith Brewery of Tadcaster, Yorkshire.
Document 13: East End of London: The East End of London, also known simply as the East End, is an area of Central, East London and London Docklands, England; east of the Roman and medieval walls of the City of London, and north of the River Thames. The East End is the historic core of wider East London but is not defined by any universally accepted boundaries, though the various channels of the River Lea are often considered to be the eastern boundary.
Document 14: More London: More London, also named London Bridge City, is a privately owned development on the south bank of the River Thames, immediately south-west of Tower Bridge in London. The southern exit is on Tooley Street.
Document 15: Evelyn (ward): Evelyn is an electoral ward in the northernmost part of the London Borough of Lewisham. It is located in the Deptford area on the south bank of the River Thames, and is the only Lewisham ward that borders the Thames. Occupying the northern corner of the London Borough of Lewisham, the Evelyn ward borders only one other Lewisham ward, which is "New Cross" to the south. But Evelyn borders wards from three other London Boroughs, "Greenwich West" in the Royal Borough of Greenwich to the east, "Surrey Docks" of the London Borough of Southwark to the northwest, and across the River Thames on the Isle of Dogs, the "Millwall" ward from the London Borough of Tower Hamlets.
ground_truth: Prospect of Whitby