user: Question: What Chroma Format that has both Picture Coding Types of I, P, B, and the Name of Main profile?
Columns: ['Abbr.', 'Name', 'Picture Coding Types', 'Chroma Format', 'Aspect Ratios', 'Scalable modes', 'Intra DC Precision']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['SP', 'Simple profile', 'I, P', '4:2:0', 'square pixels, 4:3, or 16:9', 'none', '8, 9, 10']
SQL:

assistant: SELECT "Chroma Format" FROM "Table" WHERE "Picture Coding Types" = 'I, P, B' AND "Name" = 'Main profile';