user: Question: What is the democratic coalation when together we can do more is Sergio Castro ( PC )?
Columns: ['Dist.', 'Democratic Coalition', 'Alliance', 'Together We Can Do More', 'Independent Regional Force', 'Independents']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Rolando Caviedes ( PDC )', 'Ximena Valcarce ( RN )', 'Juan Riveros ( PC )', 'Bernardo Olivos ( PAR )', 'Nino Baltolú']
SQL:

assistant: SELECT "Democratic Coalition" FROM "Table" WHERE "Together We Can Do More" = 'Sergio Castro ( PC )';