Presented by the 11th annual Sankofa Theatre Festival, showcasing emerging and established black playwrights The Green Book Chronicles by Karen Culley The play runs Aug. 29-Sept. 1, 7:30 p.m. and Sat., Sept. 1, 2 p.m. There will be an opening night reception at 6:30 p.m. Aug. 29, followed by that evening's premiere performance of the play. Caught between running an inn for African American motorists and providing for their own children, a Virginia family must weather impending societal changes on…