Use "written material" in a sentence

1. He knows his stuff and teaches information marketing using a combination of written material, audios, and workshops/seminars

2. experience fueled by a good deal of written material

3. So, you need to find some of this written material about performing the task, understanding the situation, or solving the problem

4. The situation is complicated further because much of the written material on this subject lacks clarity

5. I helped Charley sort over the garbage, but there was no other written material, only the containers of prepared foods