CREATE TABLE table_14763 ("Election" TEXT, "1st Member" TEXT, "1st Party" TEXT, "2nd Member" TEXT, "2nd Party" TEXT)

Which 1st Party has a 2nd Party of conservative, and a 1st Member of william wither bramston beach?
SELECT "1st Party" FROM table_14763 WHERE "2nd Party" = 'conservative' AND "1st Member" = 'william wither bramston beach'
SELECT "1st Party" FROM "table_14763" WHERE "1st Member" = 'william wither bramston beach' AND "2nd Party" = 'conservative'