Question: What singer replaced Diana Ross as the lead singer of The Supremes in January of 1970 and provided the lead vocals on the song "You Gotta Have Love in Your Heart" by the Supremes and the Four Tops?
Related documents: [0]  [DOC] Jean Terrell (born Velma Jean Terrell, November 26, 1944 in Belzoni, Mississippi) is an American R&B and jazz singer. She replaced Diana Ross as the lead singer of The Supremes in January 1970. [END] 
[1]  [DOC] "You Gotta Have Love in Your Heart" is a duet single between Motown singing groups The Supremes and the Four Tops, released as a single from their "The Return of the Magnificent 7" album in 1971. The single became a modest charter peaking at #55 on the U.S. "Billboard" Hot 100 chart and #41 on the U.S. "Billboard" R&B Singles Chart. The single fared better in the UK, where it reached #25 in the official top 50 single chart. Lead vocals were by the groups' respective lead singers Jean Terrell and Levi Stubbs. [END] 
Answer: 
Jean Terrell
Jean Terrell