Why is this so hard to understand?
Hold on a second there, big guy. This item: "4. The photos must be posted with no accompanying text - this is a photo contest, not a history class - and posted images must be free of descriptive text, including watermarks, logos, ads, etc." Does not alone make that clear.
Let's not get our panties wadded up just because I did not interpret to meet your intentions.
"posted with no accompanying text" and "images must be free of descriptive text, including watermarks, logos, ads, etc." are two different things. They would need to be separated if we were to use your list of rules.
Maybe it's time to start that poll.