Erik Jacobsen (born May 19, 1940) is an American record producer, song publisher and artist manager. He is best known for his work in the 1960s with Tim Hardin, The Lovin' Spoonful, The Charlatans, Sopwith Camel, and later with Norman Greenbaum and Chris Isaak. Though semi-retired, Jacobsen continues to manage many of his published songs and masters for various uses.
Erik Jacobsen has worked with no less than six different musicians and music groups
The context lists a total of six musicians/music groups who Erik Jacobsen is known for having worked with. So there could not be less than six musicians and music groups he's worked with. The computer was likely fooled because the context just lists names and doesn't specifically say the number.