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 | Opponent | Score | Loss | Save |
| --- | --- | --- | --- | --- |
| September 1 | @ Braves | 5 - 1 | Wilson (5-3) | Stanton (2) |
| September 2 | @ Braves | 10 - 3 | Clary (4-3) | &#124;&#124; 41,020 &#124;&#124;76-59&#124;&#124; |
| September 3 | @ Braves | 8 - 5 | Bielecki (14-6) | Stanton (3) |
| September 4 | @ Mets | 7 - 3 | Cone (12-7) | Lancaster (6) |
| September 5 | @ Mets | 3 - 2 | Williams (4-3) | &#124;&#124; 39,352 &#124;&#124;77-61&#124;&#124; |
| September 6 | @ Phillies | 9 - 1 | Maddux (16-11) | &#124;&#124; 17,272 &#124;&#124;77-62&#124;&#124; |
| September 7 | @ Phillies | 6 - 2 | Howell (11-11) | &#124;&#124; 13,058 &#124;&#124;78-62&#124;&#124; |
| September 8 | Cardinals | 11 - 8 | Williams (4-4) | Quisenberry (6) |
| September 9 | Cardinals | 3 - 2 10 | Dayley (3-2) | &#124;&#124; 37,633 &#124;&#124;79-63&#124;&#124; |
| September 10 | Cardinals | 4 - 1 | Hill (7-12) | Williams (32) |
| September 11 | Expos | 4 - 3 | Langston (11-7) | Williams (33) |
| September 12 | Expos | 2 - 0 | B. Smith (10-9) | &#124;&#124; 36,333 &#124;&#124;82-63&#124;&#124; |
| September 13 | Expos | 3 - 1 | Gross (11-11) | Lancaster (7) |
| September 15 | @ Pirates | 7 - 2 | Belinda (0-1) | &#124;&#124; 12,607 &#124;&#124;84-63&#124;&#124; |
| September 16 | @ Pirates | 8 - 6 | Maddux (17-12) | &#124;&#124; 15,668 &#124;&#124;84-64&#124;&#124; |
| September 17 | @ Pirates | 2 - 0 | Bielecki (16-7) | &#124;&#124; 21,081 &#124;&#124;84-65&#124;&#124; |
| September 18 | Mets | 10 - 6 | Viola (3-5) | Williams (34) |
| September 19 | Mets | 5 - 2 | Wilson (5-4) | Gooden (1) |
| September 20 | Phillies | 9 - 8 | Lancaster (3-2) | McDowell (19) |
| September 21 | Phillies | 9 - 1 | Mulholland (4-7) | &#124;&#124; 22,885 &#124;&#124;86-67&#124;&#124; |
| September 22 | Pirates | 4 - 2 | Drabek (13-12) | Williams (35) |
| September 23 | Pirates | 3 - 2 | Bair (2-3) | &#124;&#124; 36,849 &#124;&#124;88-67&#124;&#124; |
| September 24 | Pirates | 4 - 2 | Robinson (7-12) | Pico (1) |
| September 25 | @ Expos | 4 - 3 10 | Sanderson (11-9) | &#124;&#124; 10,305 &#124;&#124;89-68&#124;&#124; |
| September 26 | @ Expos | 3 - 2 | Den. Martinez (16-7) | Williams (36) |
| September 27 | @ Expos | 7 - 2 | Thompson (0-2) | Pico (2) |
| September 29 | @ Cardinals | 7 - 5 | Assenmacher (3-4) | Terry (2) |
| September 30 | @ Cardinals | 6 - 4 | Costello (5-4) | Lancaster (8) |
Question:
What is the score of the game on September 13 when the Expos were the opponent?
Answer:
3 - 1