Answer:
Nothing beside remains
Step-by-step explanation:
I looked it up and situational irony is irony involving a situation in which actions have an effect that is opposite from what was intended, so that the outcome is contrary to what was expected.
Here, the story basically is that there used to be this king called Ozymandiaz (he was actually Pharaoh Ramses II), who was powerful back in his day, and assumed his descendants would be just as great so he built a statue of his for the generations to come to show his greatness off, saying, “My name is Ozymandias, king of kings: Look on my works, ye Mighty, and despair!"
However, today the statue is destroyed and the top half is blown off, with the head, sneering, is half sunk. The pedestal with the message looks rather awkward and hence the situational irony, because the grand message is in ruins.