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:
| Date | Cover model | Centerfold model | Interview subject | 20 Questions | Pictorials |
| --- | --- | --- | --- | --- | --- |
| 1-07 | Pamela Anderson | Jayde Nicole | T. Boone Pickens | Ellen Pompeo | Pamela Anderson |
| 2-07 | Tricia Helfer | Heather Rene Smith | Simon Cowell | Bettie Page | Tricia Helfer, Michelle Manhart |
| 3-07 | Mariah Carey | Tyran Richard | Jeremy Piven | Mariah Carey | Erica Chevillar |
| 4-07 | Ashley Massaro | Giuliana Marino | Bill Maher | Will Arnett | Ashley Massaro, International Playmates |
| 5-07 | Anna Nicole Smith | Shannon James | Steve Nash | Fergie | Girls of Conference USA , Anna Nicole Smith |
| 6-07 | Kristine Lefebvre | Brittany Binger | Matt Groening | Don Rickles | PMOY - Sara Jean Underwood |
| 7-07 | Amanda Beard | Tiffany Selby | Bruce Willis | Danica Patrick | Amanda Beard, Reby Sky , Girls of Montauk |
| 9-07 | Amanda Paige | Patrice Hollis | Clive Owen | Jaime Pressly | Christa Campbell |
| 10-07 | Giuliana Marino | Spencer Scott | Keith Olbermann | Ali Larter | Girls of the SEC , Alicia Machado |
| 11-07 | Lindsey Roeper | Lindsay Wagner | Robert Redford | Matt Leinart | Kimberly Bell , Bunnies of the New Playboy Club |
Question:
Who was the centerfold model when the issue's pictorial was amanda beard, reby sky , girls of montauk ?
Answer:
Tiffany Selby