user: Question: What is the colonized date for the N/A charter range for Appalachian State?
Columns: ['Chapter', 'Colonized', 'Chartered', 'School', 'State', 'Status', 'Charter Range']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Mu Colony', '2013', '1900', 'University of Pennsylvania', 'Pennsylvania', 'Colony', '1900-1997 2001-2007 2013-present']
SQL:

assistant: SELECT "Colonized" FROM "Table" WHERE "Charter Range" = 'N/A' AND "School" = 'Appalachian State';