CREATE TABLE table_1889619_5 (total_footage_remaining_from_missing_episodes__mm VARCHAR2, story_no VARCHAR2, source VARCHAR2)

When a private individual is the source and 018 is the story number what is the total footage remaining from missing episodes (mm:ss)?
SELECT total_footage_remaining_from_missing_episodes__mm AS :ss_ FROM table_1889619_5 WHERE story_no = "018" AND source = "Private individual"
SELECT "total_footage_remaining_from_missing_episodes__mm" AS :ss_ FROM "table_1889619_5" WHERE "018" = "story_no" AND "Private individual" = "source"