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:
| Series # | Season # | Title | Directed by | Written by | Original air date | Production code |
| --- | --- | --- | --- | --- | --- | --- |
| 91.0 | 1.0 | "Friends and Lovers" | Bill D'Elia | David E. Kelley | October29,2001 | 5M01 |
| 92.0 | 2.0 | "Judge Ling" | Oz Scott | David E. Kelley | November5,2001 | 5M02 |
| 93.0 | 3.0 | "Neutral Corners" | Arvin Brown | David E. Kelley | November12,2001 | 5M03 |
| 95.0 | 5.0 | "I Want Love" | Michael Schultz | David E. Kelley | November26,2001 | 5M05 |
| 97.0 | 7.0 | "Nine One One" | Billy Dickson | David E. Kelley | December10,2001 | 5M07 |
| 100.0 | 10.0 | "One Hundred Tears" | Bill D'Elia | David E. Kelley | January21,2002 | 5M10 |
| 101.0 | 11.0 | "A Kick in the Head" | David Grossman & Jeannot Szwarc | David E. Kelley | February4,2002 | 5M11 |
| 102.0 | 12.0 | "The New Day" | Bethany Rooney | David E. Kelley | February11,2002 | 5M12 |
| 103.0 | 13.0 | "Woman" | Jeannot Szwarc | David E. Kelley | February18,2002 | 5M13 |
| 105.0 | 15.0 | "Heart and Soul" | Steve Gomer | David E. Kelley | March4,2002 | 5M15 |
| 108.0 | 18.0 | "Tom Dooley" | Sarah Pia Anderson | David E. Kelley | April22,2002 | 5M18 |
| 110.0 | 20.0 | "What I'll Never Do for Love Again" | Billy Dickson | David E. Kelley | May6,2002 | 5M20 |
| 111.0 | 21.0 | "All of Me" | Bethany Rooney | David E. Kelley & Peter MacNicol | May13,2002 | 5M21 |
Question:
How many episodes were directed by Sarah Pia Anderson?
Answer:
1.0