CREATE TABLE table_18296 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What are the candidates in the district whose incumbent is Gus Yatron?
SELECT "Candidates" FROM table_18296 WHERE "Incumbent" = 'Gus Yatron'
SELECT "Candidates" FROM "table_18296" WHERE "Incumbent" = 'Gus Yatron'