user: Question: What is the highest Pick, when Nationality is "united states", when College is "new mexico state", and when Round is greater than 6?
Columns: ['Round', 'Pick', 'Player', 'Nationality', 'College']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [3.0, 69.0, 'Willie Glass', 'United States', "St. John's"]
SQL:

assistant: SELECT MAX("Pick") FROM "Table" WHERE "Nationality" = 'united states' AND "College" = 'new mexico state' AND "Round" > 6.0;