Question: What's the nationality of Montreal Impact with Justin Mapp Category:Articles with hCards as the player?
SQL: SELECT "Nationality" FROM "2-16472331-7" WHERE "Team" = 'Montreal Impact' AND "Player" = 'Justin Mapp Category:Articles with hCards';

Question: After 2009, who was the player that has a nationality of Canada?
SQL: SELECT "Player" FROM "2-16472331-7" WHERE "Nationality" = 'Canada' AND "Year" > 2009.0;

Question: After 2009, what's the nationality of a player named Dwayne De Rosario Category:Articles with hCards?
SQL: SELECT "Nationality" FROM "2-16472331-7" WHERE "Year" > 2009.0 AND "Player" = 'Dwayne De Rosario Category:Articles with hCards';

Question: What's the position when the player was Justin Mapp Category:Articles with hCards with a United States nationality?
SQL: SELECT "Position" FROM "2-16472331-7" WHERE "Nationality" = 'United States' AND "Player" = 'Justin Mapp Category:Articles with hCards';