Question: Which mountain is highest, Saltoro Kangri or Gasherbrum IV?

full_context: Document 1: Baltoro Kangri: Baltoro Kangri (Urdu: بلتورو کنگری‎ ; also known as the Golden Throne) is a mountain of the Karakoram mountain range in Gilgit-Baltistan, Pakistan. Baltoro Kangri is the 82nd highest mountain in the world with an elevation of 7312 m . It lies to the south of the Gasherbrums and east of Chogolisa Peak (7,665 m). The huge Baltoro Glacier (which is one of the largest glaciers outside polar regions) rises from the foot of Baltoro Kangri. In the north of Baltoro Kangri is the Abruzzi Glacier.
Document 2: Rimo Muztagh: The Rimo Muztagh is one of the most remote subranges of the Karakoram range. The southern part of Rimo Muztagh is in the Kashmir portion of far northwestern India, also claimed by Pakistan. The northern half, including the Rimo massif, is in the Siachen area (territory controlled by India). It is far from major towns, and close to the militarily sensitive Siachen Glacier, so it has seen little exploration or climbing activity compared to, for example, the nearby Baltoro Muztagh. The highest peak is Mamostong Kangri, 7,516 metres (24,659 feet).
Document 3: 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 4: 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 5: Saraghrar: Saraghrar (Urdu: سراغرار‎ ) is the fourth highest independent peak in the Hindu Kush. The entire Saraghrar massif is a huge, irregular stretched plateau at elevation around 7000 m , lying above vertical granite and ice faces, which protect it all around. Its distinct summits are poorly identified, and information gathered from expeditions that have visited the area is often misleading. The main summits are: NE summit (7340 m ), northwest summit (7300 m ), southwest summit (7148 m ), south summit (7307 m ) and southeast summit (7208 m ). To date (2005), the northwest summit is the only unclimbed peak of the massif.
Document 6: 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 7: Saltoro Kangri: Saltoro Kangri (Urdu: ‎ ) is the highest peak of the Saltoro Mountains, better known as the Saltoro Range, which is a part of the Karakoram. It is the 31st highest mountain in the world, but it is in a very remote location deep in the Karakoram. It is located on the Actual Ground Position Line between Indian controlled territory in the Siachen region and Pakistani-controlled territory west of the Saltoro Range.
Document 8: Rimo I: Rimo I is the main summit of the Rimo massif with an elevation of 7385 m . It lies in the northern part of the remote Rimo Muztagh, a subrange of the Karakoram range. It is located about 20 km northeast of the snout of the Siachen Glacier and is the world's 71st highest mountain. "Rimo" means "striped mountain". The Rimo Glacier, originating here, drains to the Shyok river.
Document 9: Sherpi Kangri: Sherpi Kangri is a mountain peak in the Karakoram Range. It lies five km south of Ghent Kangri (7,380 m) and ten km northwest of Saltoro Kangri (7,742 m).
Document 10: Ghent Kangri: Ghent Kangri (or Mount Ghent, Ghaint I) is a high peak near the north end of the Saltoro Mountains, a subrange of the Karakoram range. It is located west of the Siachen Glacier in an area under Pakistan control, but very close to the Actual Ground Position Line with India.
Document 11: 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 12: Sia Kangri: Sia Kangri (7,442 m, 24,370 ft) is a mountain in the Baltoro Muztagh in the Karakoram. Its summit is the tripoint of territory controlled by India, China and Pakistan where the Actual Ground Position Line between Indian and Pakistani forces meets Chinese-controlled territory. Territories on all sides are disputed. The land immediately to the southwest of the peak is claimed by both Pakistan and India and controlled by Pakistan. The land to the northeast is part of the Trans Karakoram Tract, controlled by China under a 1963 border agreement with Pakistan but claimed by India. The land to the southeast is claimed by Pakistan and India, but controlled by India, as a part of its Siachen glacier territory.
Document 13: 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 14: 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 15: 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".
ground_truth: Gasherbrum IV