With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Karl Urban was in a play directed by Mel Brooks.
text_B: The European Formula 5000 Championship was a motor racing series for Formula 5000 cars held annually from 1969 to 1975 .. Formula 5000. Formula 5000. It was organized in the United Kingdom by the British Racing and Sports Car Club with each championship also including rounds held at European circuits .. United Kingdom. United Kingdom. British Racing and Sports Car Club. British Racing and Sports Car Club. The championship was first run in 1969 as the Guards Formula 5000 Championship .. Formula 5000. Formula 5000. Various sponsorship and name changes followed , with the series run as the Guards European Formula 5000 Championship in 1970 , the Rothmans F5000 European Championship in 1971 and 1972 , the Rothmans 5000 European Championship in 1973 and 1974 and finally as the ShellSport 5000 European Championship in 1975 .. Formula 5000. Formula 5000. The series was replaced by the Shellsport International Series in 1976 with Formula One , Formula Two and Formula Atlantic cars also eligible to compete .. 1976 Shellsport International Series. Formula One. Formula One. Formula Two. Formula Two. Formula Atlantic. Formula Atlantic
not_related.