user: Question: How much Distance has Notes of North End Terminus of AR 155?
Columns: ['County', 'Location', 'Distance', 'Total', 'Notes']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['Faulkner', 'Conway', 0.0, 0.0, 'Eastern terminus']
SQL:

assistant: SELECT SUM("Distance") FROM "Table" WHERE "Notes" = 'North End Terminus of AR 155';