CREATE TABLE table_71742 ("Position" TEXT, "Name" TEXT, "Party" TEXT, "First elected" FLOAT, "District" TEXT)

Tell me the name for first elected more than 1988 and district of mason
SELECT "Name" FROM table_71742 WHERE "First elected" > '1988' AND "District" = 'mason'
SELECT "Name" FROM "table_71742" WHERE "District" = 'mason' AND "First elected" > '1988'