user: Question: What is ken walter's lowest pick number with an overall pick number larger than 195?
Columns: ['Round', 'Pick #', 'Overall', 'Name', 'Position', 'College']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 5.0, 5.0, 'Curtis Dickey', 'Running Back', 'Texas A&M']
SQL:

assistant: SELECT MIN("Pick #") FROM "Table" WHERE "Name" = 'ken walter' AND "Overall" > 195.0;