sentences:  After this point, the B41 and B67 continue down Flatbush Avenue until the Seventh Avenue station, where the B67 splits off and the B69 joins Flatbush until the Grand Army Plaza station.The whole portion from Downtown Brooklyn and Grand Army Plaza is parallel to the IRT Eastern Parkway Line.After Grand Army Plaza, buses make a stop at Eastern Parkway and run through Prospect Park until Empire Boulevard.