Table:
text: $40 a Day
Season 4
Season 4
Title Directed_by Written_by Original_air_date Production_code
 Mystic  Don Colliver Peter Field Rachael Ray January21,2005 AD1D02
 Nantucket  Don Colliver Peter Field Rachael Ray February4,2005 AD1D01
 Salem  Don Colliver Peter Field Rachael Ray February18,2005 AD1D03
 Jackson Hole  Don Colliver Peter Field Rachael Ray April12,2005 AD1D06
 Mount Rushmore  Don Colliver Peter Field Rachael Ray April19,2005 AD1D07
 Ashland  Don Colliver Peter Field Rachael Ray May3,2005 AD1D05
 Coos Bay  Don Colliver Peter Field Rachael Ray May13,2005 AD1D04
 South Beach  Don Colliver Peter Field Rachael Ray June10,2005 AD1D09
 Ft. Lauderdale  Don Colliver Peter Field Rachael Ray July8,2005 AD1D10
 San Juan  Don Colliver Peter Field Rachael Ray July22,2005 AD1D11

Question: Tell me the author of the production code ad1d09 under the $40 a day season 4. ?