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 |
| --- | --- | --- | --- | --- | --- |
| Massachusetts 1 | Silvio Conte | Republican | 1958.0 | Re-elected | Silvio Conte (R) 82.7% John R. Arden (D) 17.3% |
| Massachusetts 2 | Edward Boland | Democratic | 1952.0 | Retired Democratic hold | Richard Neal (D) 80.3% Louis R. Godena (I) 19.7% |
| Massachusetts 3 | Joseph D. Early | Democratic | 1974.0 | Re-elected | Joseph D. Early (D) Unopposed |
| Massachusetts 4 | Barney Frank | Democratic | 1980.0 | Re-elected | Barney Frank (D) 70.3% Debra R. Tucker (R) 29.7% |
| Massachusetts 7 | Ed Markey | Democratic | 1976.0 | Re-elected | Ed Markey (D) Unopposed |
| Massachusetts 9 | Joe Moakley | Democratic | 1972.0 | Re-elected | Joe Moakley (D) Unopposed |
Question:
What is the incumbent for 1974?
Answer:
Joseph D. Early