SELECT avg(t1.access_count) FROM documents AS t1 JOIN document_functional_areas AS t2 ON t1.document_code  =  t2.document_code JOIN functional_areas AS t3 ON t2.functional_area_code  =  t3.functional_area_code WHERE t3.functional_area_description  =  "Acknowledgement"
What are the average access counts of documents that have the functional area description "Acknowledgement"?
SELECT avg ( t1.access_count ) FROM documents AS t1 JOIN document_functional_areas AS t2 ON t1.document_code = t2.document_code JOIN functional_areas AS t3 ON t2.functional_area_code = t3.functional_area_code WHERE t3.functional_area_description = `` Acknowledgement ''
select avg ( t1 . access_count ) from documents as t1 join document_functional_areas as t2 on t1 . document_code = t2 . document_code join functional_areas as t3 on t2 . functional_area_code = t3 . functional_area_code where t3 . functional_area_description = value
What are the average access counts of documents that have the functional area description `` Acknowledgement '' ?