user: Question: What's the Elevator that has Elevated: 1378, September 18, an Order of Cardinal-priest, and an Elector of Poncello Orsini?
Columns: ['Elector', 'Order', 'Title', 'Elevated', 'Elevator']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Francesco Moricotti Prignani', 'Cardinal-bishop', 'Bishop of Palestrina', '1378, September 18', 'Urban VI']
SQL:

assistant: SELECT "Elevator" FROM "Table" WHERE "Elevated" = '1378, September 18' AND "Order" = 'Cardinal-priest' AND "Elector" = 'Poncello Orsini';