CREATE TABLE table_18131 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

What was the result of the election featuring incumbent norman sisisky?
SELECT "Results" FROM table_18131 WHERE "Incumbent" = 'Norman Sisisky'
SELECT "Results" FROM "table_18131" WHERE "Incumbent" = 'Norman Sisisky'