original: Seeds of several species are the source of the popular beverage coffee.
simplifications: Seeds of several species make up the popular beverage coffee. Couple different types of seeds are the source of coffee. Coffee contains several species of seeds. Several species of seeds go into making coffee. Seeds of several species are used to make coffee, a popular drink. Seeds of several species are the source of the popular drink coffee. Coffee is made from the several species of seeds. The source of coffee is several species of seeds. Coffee is made from seeds of several species. Several types of these seeds are used in popular coffee drinks.