How many years as tallest building was Independence Hall?
CREATE TABLE table_name_6 (years_as_tallest VARCHAR, name VARCHAR)
SELECT years_as_tallest FROM table_name_6 WHERE name = "independence hall"
### Context: CREATE TABLE table_name_6 (years_as_tallest VARCHAR, name VARCHAR) ### Question: How many years as tallest building was Independence Hall? ### Answer: SELECT years_as_tallest FROM table_name_6 WHERE name = "independence hall"