| news transcript(noun, expression, source, research, document) |
| original material(noun, expression, source, research, document) |
| editorial(noun, source, research, document, recording) |
| evidence(noun, source, research, document, recording) |
| interview(noun, source, research, document, recording) |
| statistics(noun, source, research, document, recording) |
| original source(noun, expression, source, research, document) |
| correspondence(noun, source, research, document, recording) |
| diary(noun, source, research, document, recording) |
| letters(noun, source, research, document, recording) |
| speech(noun, source, research, document, recording) |
| literary memoirs(noun, expression, source, research, document) |
| news segment(noun, expression, source, research, document) |
| primary source(noun, expression, source, research, document) |
| artistic work(noun, expression, source, research, document) |
| legal document(noun, expression, source, research, document) |