which country gave birth to the engineered propulsion systems graflight v-8 and total engine concepts mm cb-40 aircrafts ?
SELECT DISTINCT var_uri where brack_open dbr_Engineered_Propulsion_Systems_Graflight_V-8 dbp_nationalOrigin var_uri sep_dot dbr_Total_Engine_Concepts_MM_CB-40 dbp_nationalOrigin var_uri brack_close