delete from omeka_elements where element_set_id=4;
delete from omeka_elements where element_set_id=5;
delete from omeka_elements where element_set_id=6;
delete from omeka_element_sets where id=4;
delete from omeka_element_sets where id=5;
delete from omeka_element_sets where id=6;
delete from omeka_record_types where id=3;


