Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Episode | Stage | Celebrities | Directed and produced by | Original airdate | Viewers (overnight estimates) |
| --- | --- | --- | --- | --- | --- |
| 1.0 | "England to Turkey" | Frank Skinner and Lee Mack | Rupert Miles | 13October2009 | 4.2million |
| 2.0 | "Turkey to Kazakhstan" | Nick Hewer and Saira Khan | Matt Brandon | 20October2009 | 3.6million |
| 3.0 | "Kazakhstan to Mongolia" | Julia Bradbury and Matt Baker | Robert Murphy | 27October2009 | 4.2million |
| 4.0 | "Mongolia to California" | Bill Turnbull and Louise Minchin | Justin Kelly | 4November2009 | 4.1million |
| 5.0 | "California to Tennessee" | Myleene Klass and John Barrowman | Karen Selway | 10November2009 | 3.9million |
Question:
Which episode had celebrities Nick Hewer and Saira Khan in them?
Answer:
2.0