sentences:  When Margrit started working at Robert Mondavi Winery, there were very few visitors frequenting Napa Valley.One of the first things Margrit did was establish a fine arts program at the winery that brought many different artists to the winery including Richard Diebenkorn, Wayne Thiebaud and Nathan Oliveira.Margrit founded the winery's "Summer Music Festival" in 1969 as a benefit for the Napa Valley Symphony.