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:
| No. in series | Title | Directed by | Written by | Original air date | Production code |
| --- | --- | --- | --- | --- | --- |
| 1.0 | " The Gang Gets Racist " | John Fortenberry | Charlie Day & Rob McElhenney | August4,2005 | IP01001 |
| 2.0 | " Charlie Wants an Abortion " | John Fortenberry | Charlie Day & Rob McElhenney | August11,2005 | IP01003 |
| 3.0 | " Underage Drinking: A National Concern " | Dan Attias | Rob McElhenney | August18,2005 | IP01006 |
| 4.0 | " Charlie Has Cancer " | Rob McElhenney | Rob McElhenney | August25,2005 | IP01004 |
| 5.0 | " Gun Fever " | Dan Attias | Glenn Howerton | September1,2005 | IP01005 |
| 6.0 | " The Gang Finds a Dead Guy " | Dan Attias | Rob McElhenney | September8,2005 | IP01007 |
Question:
Who directed the episode with production code ip01003? 
Answer:
John Fortenberry