Table schema:
CREATE TABLE table_name_82 (engine VARCHAR, year_to VARCHAR, model VARCHAR, year_from VARCHAR)

Question: How many engines have a Model of sl600, and a Year From of 1994, and a Year To smaller than 1995?
SQL: SELECT COUNT(engine) FROM table_name_82 WHERE model = "sl600" AND year_from = 1994 AND year_to < 1995