Table schema:
CREATE TABLE table_name_49 (nationality VARCHAR, cardinalatial_order_and_title VARCHAR)

Question: What is the nationality of the elector withe the Cardinalatial order and title of Cardinal-Priest of Ss. XII Apostoli?
SQL: SELECT nationality FROM table_name_49 WHERE cardinalatial_order_and_title = "cardinal-priest of ss. xii apostoli"