Problem: Sayyid Ruhollah Musavi Khomeini (Persian: syd rwHllh mwswy khmyny [ru:hol'la:he khomei'ni:] ( listen); 24 September 1902 - 3 June 1989), known in the Western world as Ayatollah Khomeini, was an Iranian Shia Muslim religious leader and politician. He was the founder of Iran as an Islamic republic and the leader of its 1979 Iranian Revolution that saw the overthrow of 2500 years of Persian monarchy and Mohammad Reza Pahlavi, the last Shah of Iran.

Khomeini was not allowed to return to Iran during the Shah's reign (as he had been in exile). On 17 January 1979, the Shah left the country (ostensibly "on vacation"), never to return. Two weeks later, on Thursday, 1 February 1979, Khomeini returned in triumph to Iran, welcomed by a joyous crowd estimated (by BBC) to be of up to five million people. On his chartered Air France flight back to Tehran 120 journalists accompanied him, including three women. One of the journalists, Peter Jennings, asked: "Ayatollah, would you be so kind as to tell us how you feel about being back in Iran?" Khomeini answered via his aide Sadegh Ghotbzadeh: "Hichi" (Nothing). This statement--much discussed at the time and since--was considered by some reflective of his mystical beliefs and non-attachment to ego. Others considered it a warning to Iranians who hoped he would be a "mainstream nationalist leader" that they were in for disappointment.  To others, it was a reflection of an unfeeling leader incapable or unconcerned with understanding the thoughts, beliefs, or the needs of the Iranian populace.  Khomeini adamantly opposed the provisional government of Shapour Bakhtiar, promising "I shall kick their teeth in. I appoint the government." On 11 February (Bahman 22), Khomeini appointed his own competing interim prime minister, Mehdi Bazargan, demanding, "since I have appointed him, he must be obeyed." It was "God's government," he warned, disobedience against him or Bazargan was considered a "revolt against God."  As Khomeini's movement gained momentum, soldiers began to defect to his side and Khomeini declared ill fortune on troops who did not surrender. On 11 February, as revolt spread and armories were taken over, the military declared neutrality and the Bakhtiar regime collapsed. On 30 and 31 March 1979, a referendum to replace the monarchy with an Islamic Republic passed with 98% voting in favour of the replacement, with the question: "should the monarchy be abolished in favour of an Islamic Government?"

What did he do once he was back?

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Problem: The Clark Sisters are an American gospel vocal group consisting of five sisters: Jacky Clark Chisholm (b. 1948), Denise Clark Bradford (b. 1953), Elbernita "Twinkie" Clark-Terrell (b. 1954), Dorinda Clark-Cole (b. 1957), and Karen Clark Sheard (b. 1960). The Clark Sisters are the daughters of gospel musician and choral director Mattie Moss Clark. They are credited for helping to bring gospel music to the mainstream and are considered as pioneers of contemporary gospel.

The Clark Sisters were born and raised in Detroit, Michigan. They each began singing at an early age, and by the late 1960s they were all performing together in church services, usually singing songs written and arranged by their mother. A few years later, Dr. Mattie Moss Clark turned over control of the group to Twinkie, who would then go on to write, arrange, conduct, and produce all of the Clark Sisters' recordings. In 1973, the sisters recorded their first album, Jesus Has A Lot To Give, on their uncle's local label Billesse Records.  The following year, Dr. Mattie Moss Clark Presents The Clark Sisters was released and people around Detroit began to take notice of the group. The Clark Sisters signed to Sound of Gospel Records in 1974. Under this association, the group released albums such as Unworthy, Count It All Joy, and He Gave Me Nothing to Lose. It was not until the early 1980s that The Clark Sisters began to become more widely known. Their popularity soared with the release of the live recording Is My Living In Vain. The first live recording by The Clark Sisters spent an entire year at number one on Billboard's Gospel Music chart. Opening with the bluesy title track, each sister vocally declares that their dedication to Christ is not a useless effort. The innovative "Hi ya" was funky enough to find its way into a Tonex produced track over two decades later. Karen Clark's lead on "Speak Lord" expresses deep faith while the call to worship is raised on "Now Is The Time". Another hit from this release, "Expect Your Miracle", is still a staple in black churches across the country.  Their next release You Brought the Sunshine would prove to be a monster hit via the title track. Reminiscent of Stevie Wonder's "Master Blaster (Jammin')," the song became a hit in church houses and on dance floors, including New York's Studio 54. "Sunshine" was picked up from its original independent gospel record label Sounds of Gospel and distributed by both Westbound Records and Elektra Records. In 1983, the song peaked at #16 on the Black Singles chart, #27 on the Club Play Charts, and #80 on the Hot R&B Charts driving the album to Gold sales. This album continues to display Twinkie's signature blend of scripture with unprecedented vocal and musical arrangements on biblically based songs like "Psalms 31." The album's other songs include the sincere prayer found within the lyrics of both "Center of Thy Will" and "Endow Me," featuring a young but already vocally mature Karen, as well as "Overdose of the Holy Ghost", showcasing Dorinda's vocal dexterity. The disco-inspired "He Keeps Me Company" is noted for its bubbly syncopation.  The sisters delivered another progressive effort in 1982, Sincerely, which included "Name It And Claim It" and the politically charged "World." Though its success was overshadowed by the previous hit "You Brought The Sunshine", the album received a Grammy nomination.

were they real sisters?

Answer with quotes:
usually singing songs written and arranged by their mother.