CREATE TABLE table_888 ("District" FLOAT, "Incumbent" TEXT, "Party" TEXT, "Elected" FLOAT, "Status" TEXT, "Opponent" TEXT)

who is the the incumbent with opponent being anthony weiner (d) unopposed
SELECT "Incumbent" FROM table_888 WHERE "Opponent" = 'Anthony Weiner (D) unopposed'
SELECT "Incumbent" FROM "table_888" WHERE "Opponent" = 'Anthony Weiner (D) unopposed'