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_3955 ( "Code" text, "District" text, "Headquarters" text, "Population (2001 Census)" real, "Population (2011 Census)" real, "Area (km\u00b2)" real, "Density in 2011 (/km\u00b2)" text )

### Question ###
How many people lived in the district whose headquarters is in Bhubaneswar in 2001?

### Accurate SQL ###

SELECT "Population (2001 Census)" FROM table_3955 WHERE "Headquarters" = 'Bhubaneswar'