Question: Don Dokken and Roy Khan, have which mutual occupation?

<P0-S0>  Commonly known as Roy Khan or simply Khan, he was the lead vocalist for the symphonic power metal band Kamelot from 1997 to his departure in 2011. <P0-S1>  He co-wrote most of Kamelot's songs with the band's guitarist and founder Thomas Youngblood during his tenure. <P0-S2> Roy Sætre Khantatat (born March 12, 1970), is a Norwegian singer-songwriter. <P0-S3>  Prior to joining Kamelot, Khan was lead singer for the Norwegian progressive metal band Conception from 1991 until 1997 when they disbanded. <SEP> <P1-S0> Donald Maynard Dokken (born June 29, 1953) is an American heavy metal vocalist, best known for being the lead singer, occasional guitarist, and founder of the band Dokken. <P1-S1>  He used to be known for his vibrato-laden, melodic vocal style which has made him an influential figure in American hard rock and heavy metal. <P1-S2>  After enjoying mainstream success with Dokken, he parted ways with the band in 1988 and pursued a solo career. <P1-S3>  His 1990 solo album, "Up from the Ashes", spawned two singles. <SEP> <P2-S0> Begum Om Habibeh Aga Khan (15 February 1906 – 1 July 2000) was the fourth and last wife of Sir Sultan Muhammad Shah, Aga Khan III. <P2-S1>  The couple married thirteen months after the Aga Khan III and his third wife were divorced by mutual consent. <P2-S2>  The Begum was well known for her generosity towards and compassion for the impoverished and the elderly. <P2-S3>  Her Egyptian Om Habibeh Foundation worked towards the alleviation of poverty and the improvement of quality of life in the area surrounding Aswan, Egypt, and in Le Cannet she established a retirement home. <P2-S4>  She was particularly interested in women’s issues and, an accomplished artist and sculptor, she was also interested in the arts including classical music, ballet, and the opera. <P2-S5>  The Begum died at the age of 94 in Le Cannet and was buried in the mausoleum of her husband at Aswan. <SEP> <P3-S0> Kohali is a village of union council 47-GB of samundri of Faisalabad District in the Punjab province of Pakistan. <P3-S1>  It is part of samundri, and located at latitude 31° 7'45.50"N and longitude 72°47'56.72"E with an altitude of 563 feet. <P3-S2>  It was very rich and historical village before independence. <P3-S3>  It is known for many army personnel for Pakistan like General Fahim Akhtar Khan, Brig. Muhammad Akram, Maj Basheer Ahmed Khan and his two sons. <P3-S4>  Brig Akram is the first Pakistani who visited Antarctica and anchored Pakistan flag there. <P3-S5>  They have done many awesome or worth praising service for their native village. <P3-S6>  Rana Mukhtar Ahmad Khan Chairman is Great Person And Political Personality of Kohali. <P3-S7>  Also Muhammad Aslam Anjum is the most influential personality of Kohali. <P3-S8>  His son Awais Anjum has remarkable contribution to the Nation's defense industry. <P3-S9>  Most of the population of this village is Muslim . <P3-S10>  There are four mosques and one Imambargah in the village. <P3-S11>  More influential tribes and clans are Rajput, Jat, Arian, etc. <P3-S12>  Main occupation of the people are cultivation. <P3-S13>  This village is located about 10 km from Gojra and about 29 km from Samundri.