Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_2 (height_feet_m VARCHAR, surpassed_by VARCHAR)

### Question ###
Tell me the height which has a surpassed by of book tower

### Accurate SQL ###

SELECT height_feet_m FROM table_name_2 WHERE surpassed_by = "book tower"