What is the average Singapore value with a London value less than 0?
CREATE TABLE table_name_80 (singapore INTEGER, london INTEGER)
SELECT AVG(singapore) FROM table_name_80 WHERE london < 0
### Context: CREATE TABLE table_name_80 (singapore INTEGER, london INTEGER) ### Question: What is the average Singapore value with a London value less than 0? ### Answer: SELECT AVG(singapore) FROM table_name_80 WHERE london < 0