user: Question:  who is the champion where semi-fiNAlist #2 is NA and location is Morrisville, NC
Columns: ['Year', 'Champion', 'Score', 'Runner-Up', 'Location', 'Semi-Finalist #1', 'Semi-Finalist #2']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['2000', 'Elon University', '5-4OT', 'North Carolina State', 'Durham, NC', 'NA', 'NA']
SQL:

assistant: SELECT "Champion" FROM "Table" WHERE "Semi-Finalist #2" = 'NA' AND "Location" = 'Morrisville, NC';