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_3 ( speed VARCHAR, construction_begun VARCHAR, expected_start_of_revenue_services VARCHAR )

### Question ###
What is the Speed when Construction begun in 2010, and an Expected start of revenue services of 2015?

### Accurate SQL ###

SELECT speed FROM table_name_3 WHERE construction_begun = "2010" AND expected_start_of_revenue_services = 2015