CREATE TABLE table_749 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Who is the incumbent candidate in the election of percy priest (d) 90.8% robert m. donihi (r) 9.2%?
SELECT "Incumbent" FROM table_749 WHERE "Candidates" = 'Percy Priest (D) 90.8% Robert M. Donihi (R) 9.2%'
SELECT "Incumbent" FROM "table_749" WHERE "Candidates" = 'Percy Priest (D) 90.8% Robert M. Donihi (R) 9.2%'