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:
| District | Incumbent | Party | First elected | Result | Candidates |
| --- | --- | --- | --- | --- | --- |
| Pennsylvania 3 | Hardie Scott | Republican | 1946.0 | Retired Democratic gain | James A. Byrne (D) 58.4% Morton Witkin (R) 41.6% |
| Pennsylvania 9 | Paul B. Dague | Republican | 1946.0 | Re-elected | Paul B. Dague (R) 66.2% Philip E. Ragan (D) 33.8% |
| Pennsylvania 12 | Ivor D. Fenton | Republican | 1938.0 | Re-elected | Ivor D. Fenton (R) 60.7% Peter Krehel (D) 39.3% |
| Pennsylvania 23 | Leon H. Gavin Redistricted from 19th | Republican | 1942.0 | Re-elected | Leon H. Gavin (R) 67.8% Fred C. Barr (D) 32.2% |
| Pennsylvania 25 | Louis E. Graham | Republican | 1938.0 | Re-elected | Louis E. Graham (R) 50.4% Frank M. Clark (D) 49.6% |
Question:
Which district had Paul B. Dague as the incumbent?
Answer:
Pennsylvania 9