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:
| Res. | Record | Opponent | Method | Round | Time | Location |
| --- | --- | --- | --- | --- | --- | --- |
| Win | 20-7 | Lumumba Sayers | Submission (rear naked choke) | 1.0 | 3:39 | Castle Rock, Colorado |
| Loss | 19-7 | Jeremy Kimball | TKO (Punches) | 2.0 | 2:29 | Castle Rock, Colorado |
| Loss | 19-6 | Mats Nilsson | Submission (arm triangle choke) | 2.0 | 4:17 | Beirut , Lebanon |
| Win | 19-5 | Indalecio Tat Romero | Decision (unanimous) | 3.0 | 5:00 | Minneapolis, Minnesota |
| Win | 18-5 | Ryan Williams | Submission (triangle choke) | 3.0 | 2:48 | Minneapolis, Minnesota |
| Win | 17-5 | Ashkan Morvari | Decision (unanimous) | 3.0 | 5:00 | Rochester, Minnesota |
| Win | 16-5 | Jeremy Lafferty | Submission (punches) | 1.0 | 2:02 | Rochester, Minnesota |
| Loss | 15-5 | Ryan Ford | Submission (rear naked choke) | 1.0 | 4:29 | Edmonton, Alberta , Canada |
| Win | 15-4 | Travis Perzynski | Decision (unanimous) | 3.0 | 5:00 | Rochester, Minnesota |
| Win | 14-4 | Jay Ellis | TKO (punches) | 1.0 | 2:53 | Rochester, Minnesota |
| Loss | 13-4 | Beau Baker | Decision (unanimous) | 3.0 | 5:00 | Norfolk, Virginia |
| Win | 13-3 | Geno Roderick | Submission (rear naked choke) | 1.0 | 3:25 | Springfield, Illinois |
| Win | 12-3 | Joe Julianelle | TKO (punches) | 1.0 | 0:50 | Rochester, Minnesota |
| Loss | 11-3 | Anthony Johnson | KO (punches) | 1.0 | 0:51 | Broomfield, Colorado |
| Loss | 11-2 | Mac Danzig | Submission ( rear naked choke ) | 1.0 | 2:01 | Las Vegas, Nevada |
| Win | 11-1 | Sidney Silva | KO (punch) | 1.0 | 4:33 | Las Vegas, Nevada |
| Win | 10-1 | Robert Farley | TKO (punches) | 1.0 | 2:23 | Sloan, Iowa |
| Win | 9-1 | Andy Normington | Submission (strikes) | 1.0 | N/A | Rochester, Minnesota |
| Win | 8-1 | Dan Washburn | Submission (strikes) | 1.0 | N/A | Rochester, Minnesota |
| Win | 7-1 | Sean Huffman | TKO (corner stoppage) | 1.0 | 5:00 | Minnesota |
| Loss | 6-1 | John Meyer | TKO (punches) | 3.0 | N/A | Hayward, Wisconsin |
| Win | 6-0 | Jim Abrille | TKO (corner stoppage) | 1.0 | 5:00 | Georgia |
| Win | 5-0 | Rob Marcks | TKO (corner stoppage) | 1.0 | N/A | Rochester, Minnesota |
| Win | 4-0 | Gerald Pearson | TKO (slam) | 2.0 | N/A | Fairfield, Ohio |
| Win | 3-0 | Adam Hill | TKO (punches) | 2.0 | N/A | Rochester, Minnesota |
| Win | 2-0 | Mike Van Meer | Decision (unanimous) | 3.0 | 5:00 | Ellsworth, Minnesota |
| Win | 1-0 | Jose Frausto | Submission (arm-triangle choke) | 1.0 | N/A | Rochester, Minnesota |
Question:
Who is the opponent of the submission (triangle choke) method of submission?
Answer:
Ryan Williams