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_73 (incorporated_in VARCHAR, principal_activities VARCHAR)

### Question ###
Name the incorporated for principal activites of travel agency

### Accurate SQL ###

SELECT incorporated_in FROM table_name_73 WHERE principal_activities = "travel agency"