What is the namesake of the feature found at 189.5w longitude? 
CREATE TABLE table_16768245_2 (namesake VARCHAR, longitude VARCHAR)
SELECT namesake FROM table_16768245_2 WHERE longitude = "189.5W"
### Context: CREATE TABLE table_16768245_2 (namesake VARCHAR, longitude VARCHAR) ### Question: What is the namesake of the feature found at 189.5w longitude?  ### Answer: SELECT namesake FROM table_16768245_2 WHERE longitude = "189.5W"