Table schema:
CREATE TABLE table_name_25 (elevator VARCHAR, elector VARCHAR, elevated VARCHAR, order VARCHAR)

Question: What's the Elevator that has Elevated: 1378, September 18, an Order of Cardinal-Priest, and an Elector of Poncello Orsini?
SQL: SELECT elevator FROM table_name_25 WHERE elevated = "1378, september 18" AND order = "cardinal-priest" AND elector = "poncello orsini"