Question: What area of Pakistan are both the Trivor and Masherbrum mountain ranges located?

full_context: Document 1: Momhil Sar: Momhil Sar, or Mumhail Sar as pronounced in Wakhi is at 7343 m above sea level, is the 64th highest mountain peak in the world. Mumhail Sar in Wakhi means the mountain that overlooks or is above Grandmother's cattle pen or paddock. It is situated in the Hispar Muztagh subrange of the Karakoram range, a few kilometres to the north-west of its parent peak Trivor.
Document 2: Gasherbrum: Gasherbrum (Urdu: گاشر برم‎ ) is a remote group of peaks located at the northeastern end of the Baltoro Glacier in the Karakoram range of the Himalaya on the border of the Chinese-administered Shaksgam Valley and the Gilgit-Baltistan territory of Pakistan. The massif contains three of the world's 8,000 metre peaks (if Broad Peak is included). Although the word "Gasherbrum" is often claimed to mean "Shining Wall", presumably a reference to the highly visible face of Gasherbrum IV, it comes from "rgasha" (beautiful) + "brum" (mountain) in Balti, hence it actually means "beautiful mountain".
Document 3: Gasherbrum IV: Gasherbrum IV (Urdu: گاشر برم -4‎ ; ), surveyed as K3, is the 17th highest mountain on Earth and the 6th highest in Pakistan. It is one of the peaks in the Gasherbrum massif.
Document 4: Masherbrum: Masherbrum (Urdu: ‎ ; formerly known as K1) is located in the Ghanche District, Gilgit Baltistan of Pakistan. At 7821 m it is the 22nd highest mountain in the world and the 9th highest in Pakistan. It was the first mapped peak in the Karakoram mountain range, hence the designation "K1".
Document 5: K12 (mountain): Surveyed as K12, this mountain is in the Saltoro Muztagh which is a subrange of the Karakoram range in the Siachen region, near Jammu and Kashmir. It lies near the Line of Control. Its name comes from its designation given during the original survey of the Karakoram range.
Document 6: K6 (mountain): Surveyed as K6 (Urdu: کے 6‎ ), but also known as Baltistan Peak. This is a notable peak of the Masherbrum Mountains, a subrange of the Karakoram mountain range in Gilgit Baltistan region of Pakistan. Despite being much lower than its sister mountains, the Eight-thousanders and high 7000m peaks such as Masherbrum, it has huge, steep faces, and great relief above the nearby valleys.
Document 7: Muztagh Tower: Muztagh Tower (also: Mustagh Tower; "Muztagh": ice tower), is a mountain in the Baltoro Muztagh, part of the Karakoram range in Baltistan on the border of the Gilgit–Baltistan region of Pakistan and the Xinjiang Uyghur Autonomous Region of China. It stands between the basins of the Baltoro and Sarpo Laggo glaciers.
Document 8: Haramosh Peak: Haramosh Peak (Urdu: ہراموش چوٹی‎ ; also known as Haramosh or Peak 58) is a mountain located in the Karakoram range of the Gilgit-Baltistan of Pakistan. Its height is also often given as 7,409m.
Document 9: Distaghil Sar: Disteghil Sar or Distaghil Sar (Urdu: ‎ ) is the highest mountain in the Hispar Muztagh, a subrange of the Karakoram mountain range, in Gilgit-Baltistan. It is the 19th highest mountain on earth and the 7th highest peak in Pakistan. Destghil sar is a Wakhi language word, that means "above the inner ranch." The mountain has an about 3 km long top ridge above 7400m with three distinct summits: (north)west 7885m, central 7760 m, and (south)east 7696m or 7535m ().
Document 10: Trivor: Trivor (Urdu: ترِووُر‎ ) is one of the high peaks of the Hispar Muztagh, a subrange of the Karakoram range in the Gilgit-Baltistan of Pakistan.
Document 11: Hispar Muztagh: Hispar Muztagh is a sub-range of the Karakoram mountain range. It is located in the Gojal region of Gilgit-Baltistan, Pakistan, north of Hispar Glacier, south of Shimshal Valley, and east of the Hunza Valley. It is the second highest sub-range of the Karakoram, the highest being the Baltoro Muztagh. The highest mountain in the range is Distaghil Sar (7,885m/25,869 ft).
Document 12: Baltoro Glacier: The Baltoro Glacier (Urdu: ‎ ), at 63 km in length, is one of the longest glaciers outside the polar regions. It is located in the Gilgit-Baltistan region (the northernmost political entity of Pakistan). It runs through part of the Karakoram mountain range. The Baltoro Muztagh lies to the south and east of the glacier, while the Masherbrum Mountains lie to the south. At 8,611 m (28,251 ft), K2 is the highest mountain in the region, and three others within 20 km top 8,000 m.
Document 13: Tirich Mir: Tirich Mir (Khowar/Urdu: ‎ ) (alternatively Terich Mir, Terichmir and Turch Mir) is the highest mountain of the Hindu Kush range, and the highest mountain in the world outside of the Himalayas-Karakoram range, located in Chitral District of Pakistan. The mountain was first climbed in 1950 by a Norwegian expedition consisting of Arne Næss, P. Kvernberg, H. Berg, and Tony Streather. Tirich Mir overlooks Chitral town, and can be easily seen from the main bazaar.
Document 14: Gasherbrum I: Gasherbrum I (Urdu: ‎ ; ), surveyed as K5 and also known as Hidden Peak, is the 11th highest mountain in the world at 8080 m above sea level. It is located on the Pakistani–Chinese border in Gilgit–Baltistan region of Pakistan and Xinjiang region of China. Gasherbrum I is part of the Gasherbrum massif, located in the Karakoram region of the Himalaya. Gasherbrum is often claimed to mean "Shining Wall", presumably a reference to the highly visible face of the neighboring peak Gasherbrum IV; but in fact it comes from "rgasha" (beautiful) + "brum" (mountain) in Balti, hence it actually means "beautiful mountain."
Document 15: Istor-o-Nal: Istor-o-Nal or इस्तोर-ओ-नल is the third highest mountain in the Hindu Kush, in the Chitral District of the North-West Frontier Province of Pakistan. It is the 68th highest independent peak in the world. It crowns a massif with eleven peaks of elevation more than 7000 m . The peak is located a few kilometres northeast of Tirich Mir (the highest mountain in the Hindu Kush), across the Tirich Glacier. Because Istor-o-Nal is behind the higher peak of Tirich Mir from many viewpoints, it is not easily visible and therefore not well known.
ground_truth: Gilgit-Baltistan of Pakistan