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_15314901_1 ( coordinate_velocity_v_dx_dt_in_units_of_c VARCHAR, condition_parameter VARCHAR )

### Question ###
If the the condition/parameter is rapidity of 2 hyperbolic radians, what is the coordinate velocity v dx/dt in units of c?

### Accurate SQL ###

SELECT coordinate_velocity_v_dx_dt_in_units_of_c FROM table_15314901_1 WHERE condition_parameter = "Rapidity of 2 hyperbolic radians"