[@Sigil]

Also an acceptable answer for the Capital of Assyria is Nineveh. 
Which was technically the penultimate capital of the Assyrian Empire.
So in case anyone ever asks you "what is the Capital of Assyria?"
You can proudly proclaim "Nineveh!" (and not get swallowed up by a sea creature)

Else you could technically argue that there were at least 5 other capitals of Assyria other than Nineveh, therefore which period of the Assyrian empire were you looking for?

I'm bored at work okay? X3