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:
| Position | Number | Name | Height | Weight | Class | Hometown | Games↑ |
| --- | --- | --- | --- | --- | --- | --- | --- |
| LE | 99.0 | Jeremy Jarmon | 6'3" | 277lb. | Jr. | Collierville, Tennessee | 1.0 |
| LT | 98.0 | Myron Pryor | 6'1" | 310lb. | Sr. | Louisville, Kentucky | 1.0 |
| RT | 91.0 | Corey Peters | 6'3" | 290lb. | Jr. | Louisville, Kentucky | 1.0 |
| RE | 95.0 | Ventrell Jenkins | 6'2" | 285lb. | Sr. | Columbia, South Carolina | 1.0 |
| OLB | 56.0 | Braxton Kelley | 6'0" | 230lb. | Sr. | LaGrange, Georgia | 1.0 |
| MLB | 4.0 | Micah Johnson | 6'2" | 250lb. | Jr. | Fort Campbell, Kentucky | 1.0 |
| SLB | 51.0 | Johnny Williams | 6'3" | 244lb. | Sr. | Jacksonville, Florida | 1.0 |
| RCB | 32.0 | Trevard Lindley | 6'0" | 175lb. | Jr. | Hiram, Georgia | 1.0 |
| LCB | 7.0 | David Jones | 5'10" | 180lb. | Sr. | Red Jacket, West Virginia | 1.0 |
| FS | 27.0 | Ashton Cobb | 6'0" | 208lb. | Jr. | Aliquippa, Pennsylvania | 1.0 |
Question:
What are all classes for the position SLB?
Answer:
Sr.