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_30 (district INTEGER, delegate VARCHAR, took_office VARCHAR)

### Question ###
What is the largest district for delegate Cheryl Glenn, that she had taken after 2006?

### Accurate SQL ###

SELECT MAX(district) FROM table_name_30 WHERE delegate = "cheryl glenn" AND took_office > 2006