user: Question: Name the episode for run time of 22:50
Columns: ['Episode', 'Broadcast date', 'Run time', 'Viewers (in millions)', 'Archive']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['" Episode 1 "', '27April1968', '23:47', '7.2', 'Only stills and/or fragments exist']
SQL:

assistant: SELECT "Episode" FROM "Table" WHERE "Run time" = '22:50';