Question: Where is the region that contains Sliver How located in UK?

full_context: Document 1: Sale Fell: Sale Fell is a small hill near Cockermouth in the English Lake District. It is one of the smallest Wainwrights, but is nevertheless popular with locals, as it offers gentle walking and lovely views across Bassenthwaite Lake to Skiddaw.
Document 2: Hartsop above How: Hartsop above How is a fell in the English Lake District, an outlier of the Helvellyn range in the Eastern Fells. It stands above Brothers Water and the Ullswater–Ambleside road.
Document 3: Hindscarth: Hindscarth is a mountain between the valleys of Buttermere and Newlands, in the north-western part of the English Lake District. The fell's name is derived from two words from the Old Norse language, "Hind" and "Skarth", and means the pass used by the red deer.
Document 4: Steeple (Lake District): Steeple is a fell in the English Lake District. It is situated in the mountainous area between Ennerdale and Wasdale and reaches a height of 819 metres (2,687 feet). Steeple is really part of Scoat Fell, being just the rocky northern projection of that fell. However, because of its prominent peak and steep crags it has earned the reputation of being a separate fell. The Lake District writer Alfred Wainwright rated Steeple and its name very highly saying, "“Seen on a map, it commands the eye and quickens the pulse, seen in reality it does the same“".
Document 5: Glaramara: Glaramara is a fell in the English Lake District in Cumbria. It is a substantial fell that is part of a long ridge that stretches for over six kilometres from Stonethwaite in Borrowdale up to the important mountain pass of Esk Hause. The summit of Glaramara at 783 m (2,569 ft) is the central point of this ridge, which separates the valleys of Langstrath and Grains Gill. However, the ridge has two additional fells, numerous subsidiary tops and several small tarns making its traverse an appealing and challenging walk.
Document 6: United Kingdom: The total area of the United Kingdom is approximately 244,820 square kilometres (94,530 sq mi). The country occupies the major part of the British Isles archipelago and includes the island of Great Britain, the north-eastern one-sixth of the island of Ireland and some smaller surrounding islands. It lies between the North Atlantic Ocean and the North Sea with the south-east coast coming within 22 miles (35 km) of the coast of northern France, from which it is separated by the English Channel. In 1993 10 per cent of the UK was forested, 46 per cent used for pastures and 25 per cent cultivated for agriculture. The Royal Greenwich Observatory in London was chosen as the defining point of the Prime Meridian in Washington in 1884, though it no longer is.The United Kingdom lies between latitudes 49° and 61° N, and longitudes 9° W and 2° E. Northern Ireland shares a 224-mile (360 km) land boundary with the Republic of Ireland. The coastline of Great Britain is 11,073 miles (17,820 km) long. It is connected to continental Europe by the Channel Tunnel, which at 31 miles (50 km) (24 miles (38 km) underwater) is the longest underwater tunnel in the world.England accounts for just over half (53 per cent) of the total area of the UK, covering 130,395 square kilometres (50,350 sq mi). Most of the country consists of lowland terrain, with mountainous terrain north-west of the Tees-Exe line; including the Cumbrian Mountains of the Lake District, the Pennines, Exmoor and Dartmoor. The main rivers and estuaries are the Thames, Severn and the Humber. England's highest mountain is Scafell Pike (978 metres (3,209 ft)) in the Lake District.
Document 7: Knott: Knott is a mountain in the northern part of the English Lake District. It is the highest point of the "Back o'Skiddaw" region, an area of wild and unfrequented moorland to the north of Skiddaw and Blencathra. Other tops in this region include High Pike, Carrock Fell and Great Calva. The fell's slopes are mostly smooth, gentle, and covered in grass, with a few deep ravines. It stands a long way from a road and requires a long walk across the moor top get to it; this, as well as the fact that it is hidden from the rest of the Lake District by the two aforementioned giants, make it one of the most unfrequented tops in the Lakes. When it is climbed it is most often from Mungrisdale or from the north via Great Sca Fell. The word "Knott" is of Cumbric origin, and means simply "hill".
Document 8: Lake District: It is located entirely within the county of Cumbria, and all the land in England higher than 3,000 feet (910 m) above sea level lies within the National Park, including Scafell Pike, the highest mountain in England. It also contains the deepest and longest bodies of water in England, respectively Wast Water and Windermere.
Document 9: Helvellyn: Helvellyn is the third-highest point both in England and in the Lake District, and access to Helvellyn is easier than to the two higher peaks of Scafell Pike and Sca Fell. The scenery includes three deep glacial coves and two sharp-topped ridges on the eastern side (Striding Edge and Swirral Edge).
Document 10: Silver How: Silver How is a fell in the English Lake District, standing over the village of Grasmere. How, derived from the Old Norse word "haugr", is a common local term for a hill or mound.
Document 11: Haystacks (Lake District): Haystacks, or Hay Stacks, is a hill in England's Lake District, situated at the south-eastern end of the Buttermere Valley. Although not of any great elevation (597 m, 1,958 ft), Haystacks has become one of the most popular fells in the area. This fame is partly due to the writings of Alfred Wainwright, who espoused its attractions and chose it as the place where he wanted his ashes scattered. Its summit is interesting and contains a number of attractive rock formations and tarns.
Document 12: Kirkby Moor: Kirkby Moor is a poorly defined moorland area in southern Cumbria, England, named after the village of Kirkby-in-Furness, but stretching both sides of the A5092 road, and thus spanning the border of the Lake District National Park. The highest area, to the south of the road, and therefore outside the national park, is named Lowick High Common on Ordnance Survey maps, but "Kirkby Moor" is more commonly but incorrectly used. Lowick High common is the first UK SOTA summit to be activated 100 times.
Document 13: Seatallan: Seatallan is a mountain in the western part of the English Lake District. It is rounded, grassy and fairly unassuming, occupying a large amount of land. However, it is classed as a Marilyn because of the low elevation of the col connecting it to Haycock, its nearest higher neighbour to the north. The name Seatallan is believed to have a Cumbric origin, meaning "Aleyn's high pasture".
Document 14: Brae Fell: Brae Fell is a fell in the English Lake District, situated 12 kilometres north of Keswick it reaches a height of 586 m (1,923 ft) and is regarded as part of the Caldbeck Fells along with High Pike and Carrock Fell even though it has ridge links to the Uldale Fells. The fell's name has Scottish overtones and translates from the Scots language as a hillside or slope. Its northern flanks face the Scottish Borders country across the Eden Valley and Solway Firth.
Document 15: Fellbarrow: Fellbarrow is a low hill in the north west of the English Lake District. It is not far from the town of Cockermouth, near to Loweswater and can most easily be climbed from Low Lorton, or Thackthwaite. From the summit there are views across the Lorton valley to Grasmoor and Whiteside.
ground_truth: county of Cumbria
sub_queries: Silver How >> part of Answer: Lake District
where is Lake District located in the uk Answer: county of Cumbria