CREATE TABLE table_12791809_1 (super_b_capacity_reached_ VARCHAR, _citation_needed_ VARCHAR, freight_carried_s_tonne VARCHAR)

When was the super b capacity reached when the freight carried s tonne was 198818?
SELECT super_b_capacity_reached_ AS "_citation_needed_" FROM table_12791809_1 WHERE freight_carried_s_tonne = 198818
SELECT "super_b_capacity_reached_" AS "_citation_needed_" FROM "table_12791809_1" WHERE "freight_carried_s_tonne" = 198818