Table: house_elections_1994
Columns: district
incumbent
party
first_elected
status
opponent

Question: To what district does Bill Hefner belong?
SQL: SELECT "district" FROM house_elections_1994 WHERE "incumbent" = 'Bill Hefner'

Question: Who ran unsuccessfully against Bill Hefner?
SQL: SELECT "opponent" FROM house_elections_1994 WHERE "incumbent" = 'Bill Hefner'

Question: How many districts are respresented by Alex McMillan?
SQL: SELECT COUNT("status") FROM house_elections_1994 WHERE "incumbent" = 'Alex McMillan'