Question: Leonardo, nicknamed Leo, is a fictional character and one of the four main characters in Teenage Mutant Ninja Turtles comics and all related media. He is often depicted wearing a blue eye mask. His signature weapons are two katanas. Leonardo is the most serious, the most spiritual, the most disciplined, and the most in-line with Splinter's teachings and thoughts, and is the leader of the Turtles.

Leonardo again leads the team in Nickelodeon's 3D computer-animated series. He was voiced by actor Jason Biggs up until "The Wrath of Tiger Claw", Dominic Catrambone for the remainder of the second season and Seth Green beginning in the third season. In this latest version, Leonardo seems to be more experienced and still perfecting his fighting skills and leadership abilities to make more solid decisions and gain more trust from his three younger brothers. He regularly watches an animated science fiction show called Space Heroes (a parody of Star Trek: The Animated Series) and uses it as a guide for his leadership skills, often attempting to quote from the show in an attempt to sound intimidating and heroic, even if most of his attempts fall flat due to him sounding overly cliche. Leonardo immediately developed romantic feelings for Karai since their first encounter, even though she is his adoptive sister by Splinter; she was taken in by the Shredder after her mother's death and was tasked with destroying her birth family (including Leo) before changing sides upon discovering her true heritage as his adopted sister. His weapons here are purely dual katanas, which he uses in the Niten Ryu style of kenjutsu, making him an excellent swordsman. Despite the fact the other three turtles have added traits in this series, Leonardo is almost completely normal but now has blue eyes. Upon the sudden demise of his adopted father and master, he reluctantly steps up as sensei in addition to being leader, which puts even more pressure on him. He is visited, on occasion, by the spirit of Splinter who encourages him to lead his family and friends to stopping new evils. In addition to his natural ninjitsu skills, he eventually developed the strong innate ability to heal via an enchanted mantra known as "the healing hands." By chanting the incantation and making the right hand seals, Leo is fully capable of revitalizing his inner strength and counteract even the most lethal of poisons and venom of "the healing hands." He managed to develop and utilize it to counteract the lethal venom of Karai, and attempted to use it on her to release her from the Shredder's control but failed. He then succeeded in saving Casey and Michelangelo from death. According to Splinter, he shows great gifts as a healer, and that being at the edge of his life had given him "a power that few martial artists can tap."

Using a quote from the above article, answer the following question: Is the Shredder a threat?
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Answer: Leonardo immediately developed romantic feelings for Karai since their first encounter, even though she is his adoptive sister by Splinter; she was taken in by the Shredder

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.

where did they sing?

Answer with quotes:
they were all performing together in church services,