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 | Results | Candidates |
| --- | --- | --- | --- | --- | --- |
| Tennessee 1 | William L. Jenkins | Republican | 1996.0 | Re-elected | William L. Jenkins (R) 69% Kay White (D) 31% |
| Tennessee 2 | Jimmy Duncan Jr. | Republican | 1988.0 | Re-elected | Jimmy Duncan Jr. (R) unopposed |
| Tennessee 3 | Zach Wamp | Republican | 1994.0 | Re-elected | Zach Wamp (R) 67% Lewis Lewis (D) 33% |
| Tennessee 4 | Van Hilleary | Republican | 1994.0 | Re-elected | Van Hilleary (R) 60% Jerry D. Cooper (D) 40% |
| Tennessee 5 | Bob Clement | Democratic | 1988.0 | Re-elected | Bob Clement (D) 83% |
| Tennessee 6 | Bart Gordon | Democratic | 1984.0 | Re-elected | Bart Gordon (D) 55% Walt Massey (R) 45% |
| Tennessee 7 | Ed Bryant | Republican | 1994.0 | Re-elected | Ed Bryant (R) unopposed |
| Tennessee 8 | John Tanner | Democratic | 1988.0 | Re-elected | John Tanner (D) unopposed |
Question:
When was the incumbent in the Tennessee 4 district first elected? 
Answer:
1994.0