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 | Attendance | Record |
| --- | --- | --- | --- | --- |
| 1 May | Atlanta Braves | 4 - 2 | 19991.0 | 7-19 |
| 2 May | San Francisco Giants | 6 - 2 | 11959.0 | 8-19 |
| 3 May | San Francisco Giants | 3 - 1 | 18149.0 | 9-19 |
| 4 May | San Francisco Giants | 2 - 1 | 26287.0 | 9-20 |
| 5 May | Los Angeles Dodgers | 3 - 1 | 26955.0 | 9-21 |
| 6 May | Los Angeles Dodgers | 3 - 2 | 38241.0 | 10-21 |
| 7 May | Los Angeles Dodgers | 4 - 2 | 28303.0 | 10-22 |
| 9 May | San Diego Padres | 7 - 2 | 22695.0 | 11-22 |
| 10 May | San Diego Padres | 9 - 6 | 24739.0 | 11-23 |
| 11 May | San Diego Padres | 5 - 4 | 31539.0 | 11-24 |
| 13 May | San Francisco Giants | 4 - 1 | 17828.0 | 11-25 |
| 14 May | San Francisco Giants | 4 - 2 | 16404.0 | 11-26 |
| 15 May | Los Angeles Dodgers | 2 - 1 | 16986.0 | 11-27 |
| 16 May | Los Angeles Dodgers | 4 - 2 | 24556.0 | 12-27 |
| 17 May | San Diego Padres | 6 - 2 | 21469.0 | 12-28 |
| 18 May | San Diego Padres | 5 - 0 | 23265.0 | 13-28 |
| 19 May | San Diego Padres | 13 - 6 | 17898.0 | 13-29 |
| 20 May | Houston Astros | 7 - 4 | 14954.0 | 14-29 |
| 21 May | Houston Astros | 4 - 3 | 15088.0 | 14-30 |
| 23 May | Chicago Cubs | 3 - 1 | 23189.0 | 14-31 |
| 24 May | Chicago Cubs | 4 - 1 | 26887.0 | 15-31 |
| 25 May | Chicago Cubs | 7 - 5 | 26844.0 | 16-31 |
| 26 May | Philadelphia Phillies | 8 - 5 | 0.0 | 17-31 |
| 26 May | Philadelphia Phillies | 8 - 4 | 16798.0 | 18-31 |
| 27 May | Philadelphia Phillies | 2 - 1 | 17297.0 | 18-32 |
| 28 May | Philadelphia Phillies | 2 - 0 | 15451.0 | 19-32 |
| 29 May | Chicago Cubs | 2 - 1 | 23005.0 | 19-33 |
| 30 May | Chicago Cubs | 5 - 1 | 21267.0 | 20-33 |
| 31 May | Chicago Cubs | 7 - 4 | 36440.0 | 20-34 |
Question:
What is the date of the game with a record of 14-31?
Answer:
23 May