CREATE TABLE table_name_51 (date VARCHAR, oil_pattern VARCHAR, event VARCHAR)

Name the Date which has a Oil Pattern of chameleon, and a Event of lake county indiana classic?
SELECT date FROM table_name_51 WHERE oil_pattern = "chameleon" AND event = "lake county indiana classic"
SELECT "date" FROM "table_name_51" WHERE "chameleon" = "oil_pattern" AND "event" = "lake county indiana classic"