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 | Attendance | Record |
| --- | --- | --- | --- | --- | --- |
| May 1 | @ Mets | 8 - 1 | Ruthven (2-2) | 13906.0 | 12-9 |
| May 2 | @ Mets | 4 - 3 | Smith (1-2) | 11059.0 | 12-10 |
| May 4 | Padres | 7 - 6 | Monge (2-1) | 6533.0 | 13-10 |
| May 5 | Padres | 6 - 5 | Lefferts (0-1) | 28441.0 | 14-10 |
| May 6 | Padres | 8 - 5 | Ruthven (2-3) | 31700.0 | 14-11 |
| May 7 | Giants | 10 - 7 | M. Davis (0-4) | 6002.0 | 15-11 |
| May 8 | Giants | 12 - 11 | Minton (1-2) | 4645.0 | 16-11 |
| May 9 | Dodgers | 7 - 0 | Hooton (0-1) | 7908.0 | 17-11 |
| May 10 | Dodgers | 5 - 1 | Trout (3-2) | 15747.0 | 17-12 |
| May 11 | @ Astros | 3 - 1 | Ruthven (2-4) | 16829.0 | 17-13 |
| May 12 | @ Astros | 5 - 4 | DiPino (1-2) | 20737.0 | 18-13 |
| May 13 | @ Astros | 1 - 0 | Reuschel (0-1) | 13405.0 | 18-14 |
| May 15 | @ Reds | 6 - 3 | Pastore (2-3) | 13074.0 | 19-14 |
| May 16 | @ Reds | 10 - 4 | Russell (2-4) | 12899.0 | 20-14 |
| May 17 | @ Reds | 5 - 3 | Ruthven (2-5) | 18974.0 | 20-15 |
| May 18 | Astros | 7 - 6 | Smith (0-1) | 16812.0 | 21-15 |
| May 19 | Astros | 5 - 4 | Dawley (2-3) | 34122.0 | 22-15 |
| May 20 | Astros | 10 - 3 | M. Scott (2-2) | 27503.0 | 23-15 |
| May 23 | Braves | 3 - 1 | McMurtry (3-5) | 15860.0 | 24-15 |
| May 24 | Braves | 10 - 7 | Perez (3-1) | 0.0 | 25-15 |
| May 24 | Braves | 7 - 5 | Falcone (2-5) | 24551.0 | 26-15 |
| May 25 | Reds | 3 - 0 | Noles (2-2) | 11266.0 | 26-16 |
| May 26 | Reds | 7 - 6 | Trout (5-3) | 31556.0 | 26-17 |
| May 27 | Reds | 4 - 3 | Eckersley (0-1) | 38060.0 | 26-18 |
| May 29 | @ Braves | 7 - 4 | Brusstar (1-1) | 15156.0 | 26-19 |
| May 30 | @ Braves | 6 - 2 | Barker (4-5) | 16660.0 | 27-19 |
| May 31 | @ Phillies | 10 - 2 | Rainey (3-4) | 25044.0 | 27-20 |
Question:
What was the date of the Cubs game that had an attendance over 20,737 and a loss of Dawley (2-3)?
Answer:
May 19