Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_78 (pick VARCHAR, position VARCHAR, nationality VARCHAR, college_high_school_club VARCHAR)
### Question:
What was the pick number for the person from the United States who as drafted to the SF position from North Carolina?
### Answer:
SELECT pick FROM table_name_78 WHERE nationality = "united states" AND college_high_school_club = "north carolina" AND position = "sf"