user: Question:  how many bubbles with category being Input
Columns: ['Category', 'Type', 'Attribute', 'Description', 'Bubbles', 'Cancelable']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Input', 'input', 'oninput', 'Fires when a user enters text in a textbox.', 'Yes', 'No']
SQL:

assistant: SELECT COUNT("Bubbles") FROM "Table" WHERE "Category" = 'Input';