How many years was the chassis a lotus-ford 38/7?
CREATE TABLE table_181892_4 (year VARCHAR, chassis VARCHAR)
SELECT COUNT(year) FROM table_181892_4 WHERE chassis = "Lotus-Ford 38/7"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_181892_4 (year VARCHAR, chassis VARCHAR) Question: How many years was the chassis a lotus-ford 38/7? [/INST] SELECT COUNT(year) FROM table_181892_4 WHERE chassis = "Lotus-Ford 38/7" </s>