400 metres

Columns: Year | Time | Athlete | Location
1968 | 52.03 | Colette Besson ( FRA ) | Mexico | 1969 | 51.72 | Nicole Duclos ( FRA ) | Athens | 1970 | 51.02 | Marilyn Neufville ( JAM ) | Edinburgh | 1971 | 52.14 | Helga Seidler ( GDR ) | Helsinki | 1972 | 51.08 | Monika Zehrt ( GDR ) | Munich | 1973 | 51.27 | Mona-Lisa Pursiainen ( FIN ) | Helsinki | 1974 | 50.14 | Riitta Salin ( FIN ) | Rome | 1975 | 50.50 | Irena Szewinska ( POL ) | Nice | 1976 | 49.28 | Irena Szewinska ( POL ) | Montreal

Example questions:
In which location was the fastest time under 50 seconds recorded for 400m ? | What 400m time was recorded in the first games in Helsinki ? | In which year did the current world record holder for 400m first compete ? | Who recorded the fastest 400m time in Rome ?

Answers:
Montreal | 48.16 | 1978 | Jarmila Kratochvílová