CREATE TABLE table_66405 ("Opposing Team" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

Which Opposing Team has an Against smaller than 19, and a Date of 20/05/1979?
SELECT "Opposing Team" FROM table_66405 WHERE "Against" < '19' AND "Date" = '20/05/1979'
SELECT "Opposing Team" FROM "table_66405" WHERE "Against" < '19' AND "Date" = '20/05/1979'