Question: Diana Ross and Leslie West, are Americans with which occupation?

<P0-S0> Leslie West (born Leslie Weinstein; October 22, 1945) is an American rock guitarist, vocalist, and songwriter. <P0-S1>  He is best known as a founding member of the hard rock band Mountain. <SEP> <P1-S0> "My Mistake (Was to Love You)" is a song recorded as a duet by Diana Ross and Marvin Gaye which was the second single released off the singers' duet album "Diana & Marvin" in February 1974. <P1-S1>  One of the original songs featured on that album, "My Mistake (Was to Love You)" was written by Gloria Jones and Pam Sawyer, the team responsible for the Gladys Knight & the Pips' classic "If I Were Your Woman". <P1-S2>  Pam Sawyer was also the co-writer (with Michael Masser) of the Diana Ross hit "Last Time I Saw Him" which dropped out of the Top 40 just prior to the Top 40 debut of "My Mistake (Was to Love You)" in March 1974: Sawyer would subsequently co-write (with Marilyn Mcleod) Diana Ross' 1976 #1 hit "Love Hangover". <P1-S3>  The narrative of "My Mistake (Was to Love You)" outlines how two lovers' relationship fell apart because the man, according to the woman, felt as if "a girl loves you, you only call them weak", while the man admits that he let his lover "slip through, like grains of sand". <P1-S4>  The song peaked at #15 on the "Billboard" R&B singles chart and #19 on the "Billboard" Pop singles chart. <SEP> <P2-S0> Diana Ernestine Earle Ross (born March 26, 1944) is an American singer, songwriter, actress, and record producer. <P2-S1>  Born and raised in Detroit, Michigan, Ross rose to fame as the lead singer of the vocal group The Supremes, which, during the 1960s, became Motown's most successful act, and is to this day the United States' most successful vocal group, as well as one of the world's best-selling girl groups of all time. <P2-S2>  Ross' success as lead singer of The Supremes made it possible for future African-American R&B and soul acts to find mainstream success. <P2-S3>  The group released a record-setting twelve number-one hit singles on the US "Billboard" Hot 100, including "Where Did Our Love Go", "Baby Love", "Come See About Me", "Stop! <P2-S4>  In the Name of Love", "You Can't Hurry Love", "You Keep Me Hangin' On", "Love Child", and "Someday We'll Be Together". <SEP> <P3-S0> The Diana Ross Playground is located in New York City's Central Park, inside the park at West 81st Street and Central Park West. <P3-S1>  Its namesake, the recording artist Diana Ross, who lives across the street in The Beresford, gave two legendary free concerts in Central Park on July 21 and 22, 1983 (attendance estimated to be between 400,000 and 800,000 people), and pledged to fund the project with proceeds from the television rights. <P3-S2>  However, when a thunderstorm during the first (and only scheduled) concert destroyed all of its memorabilia/merchandise, the performance did not prove profitable, and Ms. Ross used personal resources to fund the project. <P3-S3>  Groundbreaking took place in September, 1986, with both Ross and then-Mayor Ed Koch present. <P3-S4>  Ross reportedly called the event "one of the most fulfilling aspects of [her] life and career."