Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_4119 ( "Series #" real, "Season #" real, "Title" text, "Directed by" text, "Written by" text, "Original air date" text, "Production code" real )

### Question ###
What is the original air date for episode graeme clifford directed and lindsay sturman wrote?

### Accurate SQL ###

SELECT "Original air date" FROM table_4119 WHERE "Directed by" = 'Graeme Clifford' AND "Written by" = 'Lindsay Sturman'