CREATE TABLE table_name_8 (killeen_rate INTEGER, crime VARCHAR(255), texas_rate VARCHAR(255), reported_offenses VARCHAR(255), us_rate VARCHAR(255))
Reported Offenses larger than 216, and a U.S. Rate smaller than 3274, and a Texas Rate smaller than 2688.9, and a Crime of violent crime has what killeen rate?
    
SQL: SELECT SUM(killeen_rate) FROM table_name_8 WHERE reported_offenses > 216 AND us_rate < 3274 AND texas_rate < 2688.9 AND crime = "violent crime"