Question: Which Himalayan peak has greater prominence, Sunanda Devi or Gyachung Kang?
Context: Balakun is a Himalayan peak situated in the Chamoli district of Uttarakhand state of India.  The Balakun peak has the summit at an altitude of 6471 m in the Garhwal Himalayas.  Balakun Peak is located 16 km from Badrinath.  Balakun is situated north west to Badrinath.  Balakun is situated between Bhagirathi Kharak glacier and Satopanth glacier.The peak is situated north east of Nilkanth peak.  The Alaknanda river originates from below this peak by the melting of these two glaciers at an altitude of 3641 m .  The two glaciers rise from the eastern slopes of Chaukhamba (7140 m) peak and wrap around the Balakun peak.  Balakun is situated north of Kunaling (5471 m) and south of the Arwa Group.  The peak was first climbed in 1973 a by six-man team of ITBP led by Hukum Singh. Willi Unsoeld (October 5, 1926 – March 4, 1979) was an American mountaineer who, along with Tom Hornbein, were members of the first American expedition to summit Mount Everest on May 22, 1963.  Unsoeld and Hornbein's legendary climb was the first ascent from the peak's west ridge, and the first major traverse of a Himalayan peak.  His subsequent activities included working as a U.S. Forest Service Smokejumper, Peace Corps director in Nepal, speaker for Outward Bound, faculty member at Oregon State University and The Evergreen State College and mountaineering guide.  An avalanche during a winter climb of Mount Rainier took his life. Kuthi Valley is the Himalayan valley situated in the Pithoragarh District of Uttarakhand state of India.  This valley is located in the eastern part of Uttarakhand.The valley is situated NW to SE direction.  Kuthi valley is the last valley before Tibet. This is a river valley is formed by river Kuthi, which is the easternmost river of Kumaun.  Kuthi river emerges from slopes near Wilsha and passes Lake Jolingkong at an altitude of 4,630 M, to Kuthi village.  Kuthi River flowing north to south merges with Kali River near Gunji village.  High Himalayan passes of Mangsha Dhura(5,490 M) and Lampiya Dhura(5,530 M) are situated in Kuthi valley.  Shinla pass and Nama pass joins Darma Valley to Kuthi valley.  Jolingkong and Parvati are main alpine lakes and Baba Kailash (6,191 M) is the main Himalayan peak of the valley.  This valley is mainly dominated by RUNG tribes. Chiring We is the Himalayan peak situated in eastern Kumaun of the Pithoragarh district of Uttarakhand state in India.  The altitude of the peak is 6,559 m. Chiring We is the highest peak above the Kalabaland Glacier.  Chiring We massif, which include peaks like Bamba Dhura (6,334 m), Suli Top (6,300 m), Trigal (5,983 m), Suitilla (6,373 m), separates Lassar Yankti valley from Kalabaland valley.  The peak literally means 'Mountain of long life'.  The route is through glaciers of Kalabaland, Sankalpa and Yankchar, icefall, crevasses, ice-pinnacles, ice walls and sharp ridges. First ascent to this peak was made in 1979 by an Indian team led by Harish Kapadia via northeast ridge. Molamenqing () or Phola Gangchen is an eastern outlier of Shishapangma, the 14th highest peak in the world.  Both are in the Jugal Himal, a subrange of the Himalaya in Tibet.  (This range is contiguous with, and often considered as part of, the Langtang Himal.)  Its elevation is also given as 7,661 m (25,134 ft); the elevation given here is from a Chinese survey.  Molamenqing is little-known, partly since it does not have much independent stature.  Its topographic prominence, i.e. its rise above the saddle connecting it with Shishapangma, is only 430 metres, which is relatively small for a Himalayan peak, although large enough for it to qualify in some reckonings as an independent peak. Suitilla or Suj Tilla West is a Himalayan peak located on the eastern side of Uttarakhand state in Pithoragarh District of India.  The peak is located above the junction of Kalabaland, Sankalp and Yankchar glaciers. Ralam Dhura pass is situated to the south of this peak, which connects Ralam valley to Darma valley. Dušan Jelinčič (born 1953) is a writer and a journalist from the community of Slovene minority in Italy from Trieste, Italy.  He is also an Alpine style mountaineer and the first mountaineer from Trieste who ever conquered an over-8000 m high Himalayan peak. Sunanda Devi (Hindi: सुनन्दा देवी ) previously known as Nanda Devi East is the lower of the two adjacent peaks of the highest mountain in Uttarakhand and second highest mountain in India; Nanda Devi is its higher twin peak.  Nanda Devi and Sunanda Devi are part of the Garhwal Himalayas, and are located in the state of Uttarakhand.  The graceful peaks of twin mountains are visible from almost everywhere in Kumaon.  The first ascent to the Sunanda Devi peak in recorded history appears to be in 1939 by Jakub Bujak and Janusz Klarner.  The elevation of Sunanda Devi is 7434 m and its prominence is 260 m . Gyachung Kang (Nepali: ग्याचुङ्काङ , "Gyāchung Kāng"; ) is a mountain in the Mahalangur Himal section of the Himalaya, and is the highest peak between Cho Oyu (8,201 m) and Mount Everest (8,848 m).  It lies on the border between Nepal and China.  As the fifteenth-highest peak in the world, it is also the highest peak that is not eight thousand metres tall; hence it is far less well-known than the lowest of the eight-thousanders, which are only about 100 m (328 ft) higher.  The peak's lack of significant prominence (700 m) also contributes to its relative obscurity. Sir William Lloyd (29 December 1782 – 16 May 1857) was a Welsh military commander, and was one of the first Europeans to ascend a Himalayan peak.
Answer: Gyachung Kang