user: Question: What is the nationality of the Goalie in Round 7?
Columns: ['Round', 'Player', 'Position', 'Nationality', 'College/junior/club team (league)']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2.0, 'T.J. Brennan', 'Defenseman', 'United States', "St. John's Fog Devils ( QMJHL )"]
SQL:

assistant: SELECT "Nationality" FROM "Table" WHERE "Round" = 7.0 AND "Position" = 'Goalie';