What is the average Area (in km²), when Markatal is less than 0?
CREATE TABLE table_name_81 (area__in_km²_ INTEGER, markatal INTEGER)
SELECT AVG(area__in_km²_) FROM table_name_81 WHERE markatal < 0
### Context: CREATE TABLE table_name_81 (area__in_km²_ INTEGER, markatal INTEGER) ### Question: What is the average Area (in km²), when Markatal is less than 0? ### Answer: SELECT AVG(area__in_km²_) FROM table_name_81 WHERE markatal < 0