CREATE TABLE table_name_97 (length_feet VARCHAR(255), length_meters VARCHAR(255), parish VARCHAR(255), km_from_kingston VARCHAR(255))
What is the total number of Length Feet, when Parish is Clarendon, when Km From Kingston is 71.2, and when Length Meters is less than 21.3?
    
SQL: SELECT COUNT(length_feet) FROM table_name_97 WHERE parish = "clarendon" AND km_from_kingston = 71.2 AND length_meters < 21.3