user: Question: Tell me the name for first elected more than 1988 and district of Mason
Columns: ['Position', 'Name', 'Party', 'First elected', 'District']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Chairman', 'Sharon Bulova', 'Democratic Party', 2009.0, 'At-Large']
SQL:

assistant: SELECT "Name" FROM "Table" WHERE "First elected" > 1988.0 AND "District" = 'Mason';