query: SELECT document_type_code FROM documents WHERE document_name  =  "David CV"
question: Of the document named " David CV " Return the types codes .
query_toks: SELECT document_type_code FROM documents WHERE document_name = `` David CV ''
query_toks_no_value: select document_type_code from documents where document_name = value
question_toks: Of the document named " David CV " Return the types codes .