Question: What is the lowest year that has edmonton, canada as the venue with a weight class (kg) greater than 100?
SQL: SELECT MIN("Year") FROM "2-18896497-2" WHERE "Venue" = 'edmonton, canada' AND "Weight class (kg)" > 100.0;

Question: What is the lowest weight class (kg) that has sofia, bulgaria as the venue?
SQL: SELECT MIN("Weight class (kg)") FROM "2-18896497-2" WHERE "Venue" = 'sofia, bulgaria';

Question: What is the highest year that has fila world championships as the event, with toledo, united states as the venue, and a weight class (kg) less than 97?
SQL: SELECT MAX("Year") FROM "2-18896497-2" WHERE "Event" = 'fila world championships' AND "Venue" = 'toledo, united states' AND "Weight class (kg)" < 97.0;