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:
| Year | Title | Format/genre | Role | Staged by |
| --- | --- | --- | --- | --- |
| 1938.0 | What A Life! | Original Play, Comedy | Walk on, Water carrier | George Abbott Category:Articles with hCards |
| 1938.0 | The Primrose Path Category:Articles with hCards | Original Play, Drama/Comedy | Understudy | George Abbott Category:Articles with hCards |
| 1939.0 | Mrs O'Brien Entertains | Original Play, Comedy | Molly O'Day | George Abbott Category:Articles with hCards |
| 1939.0 | Ring Two | Original Play, Comedy | Peggy Carr | George Abbott Category:Articles with hCards |
| 1940.0 | The Male Animal Category:Articles with hCards | Original Play, Comedy | Patricia Stanley | Herman Shumlin Category:Articles with hCards |
Question:
What is the title of the work where the role was Molly O'Day?
Answer:
Mrs O'Brien Entertains