What is the lowest heat for the United states with a mark of 51.85 pb and lane higher than 6?
CREATE TABLE table_name_43 (heat INTEGER, lane VARCHAR, country VARCHAR, mark VARCHAR)
SELECT MIN(heat) FROM table_name_43 WHERE country = "united states" AND mark = "51.85 pb" AND lane > 6
### Context: CREATE TABLE table_name_43 (heat INTEGER, lane VARCHAR, country VARCHAR, mark VARCHAR) ### Question: What is the lowest heat for the United states with a mark of 51.85 pb and lane higher than 6? ### Answer: SELECT MIN(heat) FROM table_name_43 WHERE country = "united states" AND mark = "51.85 pb" AND lane > 6