Table: episode_data_11
Columns: story_no
episode
title
directed_by
written_by
uk_viewers_million
ai
original_air_date
production_code

Question: Name the original air date for ai% for 83
SQL: SELECT "original_air_date" FROM episode_data_11 WHERE "ai" = 83

Question: Name the story number for paul cornell
SQL: SELECT "story_no" FROM episode_data_11 WHERE "written_by" = 'Paul Cornell'

Question: Name the total number directed by for uk viewers being 6.86
SQL: SELECT COUNT("directed_by") FROM episode_data_11 WHERE "uk_viewers_million" = '6.86'

Question: Name the least ai %
SQL: SELECT MIN("ai") FROM episode_data_11