user: Question: How many measures numbered 8 were a constitutional ammendment?
Columns: ['meas. num.', 'passed', 'YES votes', 'NO votes', '% YES', 'Const. Amd.?', 'type', 'description']
Types: ['real', 'text', 'real', 'real', 'text', 'text', 'text', 'text']
Sample row: [2.0, 'YES', 342138.0, 269467.0, '55.94%', 'Yes', 'LEG', 'Automatic Adoption, Federal Income Tax Amendments']
SQL:

assistant: SELECT COUNT("Const. Amd.?") FROM "Table" WHERE "meas. num." = 8.0;