user: Question: What is the sum of channels for qubo network?
Columns: ['Channel', 'Video', 'Aspect', 'PSIP Short Name', 'Network']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [14.1, '720p', '16:9', 'ION', 'Ion Television']
SQL:

assistant: SELECT SUM("Channel") FROM "Table" WHERE "Network" = 'qubo';