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_70 ( venue VARCHAR, notes VARCHAR, year VARCHAR, position VARCHAR )

### Question ###
What is the Venue of the Heptathlon after 2006 where Tatyana Chernova comes in Position 7th?

### Accurate SQL ###

SELECT venue FROM table_name_70 WHERE year > 2006 AND position = "7th" AND notes = "heptathlon"