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 | Driver | Entrant | Constructor | Chassis | Engine |
| --- | --- | --- | --- | --- | --- |
| 1.0 | B. Bira | Private | Maserati | Maserati 4CLT/48 | Maserati L4s |
| 2.0 | Emmanuel de Graffenried | Private | Maserati | Maserati 4CLT/48 | Maserati L4s |
| 3.0 | Tony Rolt | Private | Alfa Romeo | Alfa Romeo B | Alfa Romeo L8 |
| 4.0 | Raymond Mays Ken Richardson | T. Vandervell | Ferrari | Ferrari 125 | Ferrari V12s |
| 5.0 | Bob Ansell | Private | Maserati | Maserati 4CM | Maserati L4s |
| 6.0 | Geoff Ansell Brian Shawe-Taylor | Private | ERA | ERA B | ERA L6s |
| 7.0 | Bob Gerard | Bob Gerard Racing | ERA | ERA B | ERA L6s |
| 8.0 | David Hampshire Billy Cotton | Private | ERA | ERA B | ERA L6s |
| 9.0 | David Murray | Private | Maserati | Maserati 4CL | Maserati L4s |
| 10.0 | Reg Parnell | Scuderia Ambrosiana | Maserati | Maserati 4CLT/48 | Maserati L4s |
| 11.0 | Fred Ashmore | Scuderia Ambrosiana | Maserati | Maserati 4CLT/48 | Maserati L4s |
| 12.0 | Luigi Villoresi | Scuderia Ambrosiana | Maserati | Maserati 4CLT/48 | Maserati L4s |
| 15.0 | Louis Chiron | SFACS Ecurie France | Talbot-Lago | Talbot-Lago T26C | Talbot L6 |
| 16.0 | Louis Rosier | Private | Talbot-Lago | Talbot-Lago T26C | Talbot L6 |
| 17.0 | Yves Giraud-Cabantous | Private | Talbot-Lago | Talbot-Lago T26C | Talbot L6 |
| 18.0 | George Abecassis | Private | Alta | Alta GP | Alta L4s |
| 19.0 | Johnny Claes | Ecurie Belge | Talbot-Lago | Talbot-Lago T26C | Talbot L6 |
| 20.0 | George Nixon | Private | ERA | ERA A | ERA L6s |
| 21.0 | Peter Whitehead Dudley Folland | Scuderia Ferrari | Ferrari | Ferrari 125 | Ferrari V12s |
| 22.0 | Duncan Hamilton Philip Fotheringham-Parker | Private | Maserati | Maserati 6CM | Maserati L6s |
| 24.0 | Philippe Étancelin | Private | Talbot-Lago | Talbot-Lago T26C | Talbot L6 |
| 25.0 | Roy Salvadori | Private | Maserati | Maserati 4CL | Maserati L4s |
| 26.0 | Anthony Baring | Private | Maserati | Maserati 4CM | Maserati L4 |
| 27.0 | John Bolster | P.H. Bell | ERA | ERA B | ERA L6s |
| 28.0 | Peter Walker | P.N. Whitehead | ERA | ERA B | ERA L6s |
Question:
How many drivers did Bob Gerard Racing have?
Answer:
1.0