Escapade!
An interactive fiction by Juhana Leinonen (2008) - the Inform 7 source text
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The dinner plate is a useful supporter. It is not scenery. It is not conversable. It is not fixed in place. [The plate started to suddenly act as if it were scenery. Which is very strange.]
The description is "[if the dinner plate is part of the catapult-arm]You've attached the plate into [the trebuchet]'s arm.[paragraph break][end if][if something is on the dinner plate]There's [a list of things on the dinner plate] on the plate.[otherwise]The dinner plate is empty.[end if]".
Should the game choose when comparing the dinner plate against the metalplate:
it is a good choice.