Question: The Mothers of Invention were an American rock band from California that served as the backing musicians for Frank Zappa. Formed in 1964, their work is marked by the use of sonic experimentation, innovative album art, and elaborate live shows. Originally an R&B band called the Soul Giants, the band's first lineup included Ray Collins, David Coronado, Ray Hunt, Roy Estrada and Jimmy Carl Black. Zappa was asked to take over as the guitarist following a fight between Collins and Coronado, the band's original saxophonist/leader.

The Mothers of Invention played in New York in late 1966 and were offered a contract at the Garrick Theater during Easter 1967. This proved successful and Herb Cohen extended the booking, which eventually lasted half a year. As a result, Zappa and his wife, along with the Mothers of Invention, moved to New York. Their shows became a combination of improvised acts showcasing individual talents of the band as well as tight performances of Zappa's music. Everything was directed by Zappa's famous hand signals. Guest performers and audience participation became a regular part of the Garrick Theater shows. One evening, Zappa managed to entice some U.S. Marines from the audience onto the stage, where they proceeded to dismember a big baby doll, having been told by Zappa to pretend that it was a "gook baby".  Situated in New York, and only interrupted by the band's first European tour, the Mothers of Invention recorded the album widely regarded as the peak of the group's late 1960s work, We're Only in It for the Money (released 1968). It was produced by Zappa, with Wilson credited as executive producer. From then on, Zappa produced all albums released by the Mothers of Invention and as a solo artist. We're Only in It for the Money featured some of the most creative audio editing and production yet heard in pop music, and the songs ruthlessly satirized the hippie and flower power phenomena. The cover photo parodied that of the Beatles' Sgt Pepper's Lonely Hearts Club Band, its art provided by Cal Schenkel whom Zappa had met in New York. This initiated a lifelong collaboration in which Schenkel designed covers for numerous Zappa and Mothers albums.  Reflecting Zappa's eclectic approach to music, the next album, Cruising with Ruben & the Jets (1968), was very different. It represented a collection of doo-wop songs; listeners and critics were not sure whether the album was a satire or a tribute. Zappa has noted that the album was conceived in the way Stravinsky's compositions were in his neo-classical period: "If he could take the forms and cliches of the classical era and pervert them, why not do the same ... to doo-wop in the fifties?" A theme from Stravinsky's The Rite of Spring is heard during one song.

Using a quote from the above article, answer the following question: Did they have regular work in New York?
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Answer: 

Problem: Born in eastern Ohio in Martins Ferry, just north and across the Ohio River from Wheeling, West Virginia, Groza's parents were immigrants from Transylvania, part of modern-day Romania. His Hungarian mother Mary and Romanian father John (Ioan) Groza owned and ran Groza's Tavern on Main Street. Lou was the smallest in stature of four boys in an athletic family; his brother Alex became a star basketball player at the University of Kentucky, a member of two national championship teams.

After Groza retired, he entertained an offer to play for the San Francisco 49ers, but was reluctant to do so because he did not want to move his family and insurance business to the West Coast. He was offered a spot with the Browns as a kicking coach, helping mentor the young Don Cockroft, but he declined. Later in life, he became an ambassador and father figure for the Browns, inviting rookies over for dinner and helping them find apartments. He continued to run a successful insurance business and lived in Berea, Ohio near the Browns' headquarters and training facility. He and his wife Jackie were known as the team's First Family.  Modell relocated the Browns to Baltimore in 1995 and renamed the team the Ravens, provoking a wave of anger and disbelief from fans and former players. Groza was a leading critic of the move, saying it was "like some man walking off with your wife." In 1996, Groza wrote a memoir titled The Toe: The Lou Groza Story. The Browns restarted as an expansion team in 1999.  Groza was hobbled in the late 1990s by back and hip surgeries and Parkinson's disease. He suffered a heart attack in 2000 after dinner with his wife at Columbia Hills Country Club in Columbia Station, Ohio. He was taken to a hospital in Middleburg Heights, Ohio, where he died. He was buried in Sunset Memorial Park in North Olmsted, Ohio. Groza and his wife had three sons and a daughter. Following Groza's death, the Browns wore his number 76 on their helmets for the 2001 season.

Did he mentor the younger players?

Answer with quotes:
inviting rookies over for dinner and helping them find apartments.