user: Question: What is the lowest draft of player Justin Martin from the USA?
Columns: ['Draft', 'Round', 'Pick', 'Player', 'Nationality']
Types: ['real', 'text', 'real', 'text', 'text']
Sample row: [1967.0, '1', 1.0, 'Rick Pagnutti *', 'Canada']
SQL:

assistant: SELECT MIN("Draft") FROM "Table" WHERE "Nationality" = 'USA' AND "Player" = 'Justin Martin';