How many measures numbered 8 were a constitutional ammendment?
CREATE TABLE table_27943 (
    "meas. num." real,
    "passed" text,
    "YES votes" real,
    "NO votes" real,
    "% YES" text,
    "Const. Amd.?" text,
    "type" text,
    "description" text
)
SELECT COUNT("Const. Amd.?") FROM table_27943 WHERE "meas. num." = '8'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many measures numbered 8 were a constitutional ammendment? ### Input: CREATE TABLE table_27943 (
    "meas. num." real,
    "passed" text,
    "YES votes" real,
    "NO votes" real,
    "% YES" text,
    "Const. Amd.?" text,
    "type" text,
    "description" text
) ### Response: SELECT COUNT("Const. Amd.?") FROM table_27943 WHERE "meas. num." = '8'