Name the name for 15 yield
CREATE TABLE table_2189647_1 (name_or_number VARCHAR, yield__megatons_ VARCHAR)
SELECT name_or_number FROM table_2189647_1 WHERE yield__megatons_ = "15"
### Context: CREATE TABLE table_2189647_1 (name_or_number VARCHAR, yield__megatons_ VARCHAR) ### Question: Name the name for 15 yield ### Answer: SELECT name_or_number FROM table_2189647_1 WHERE yield__megatons_ = "15"