Q: If That is why the finger-marks have remained undisturbed since then.", can we say that "It's been decades since the finger-marks have been disturbed."?

A: it is not possible to tell

Q: If Chamber music and choral recitals are held there during Aix's summer music festival; the operas are performed behind the cloister, in the Palais de l'Ancien Archevach??., can we say that "You can hear different types of traditional music in Aix."?

A: yes

Q: If The whole peninsula is a memorial, with plaques describing the campaign's progress, and monuments to the soldiers of the Allied and Turkish armies., can we say that "The peninsula is home to monuments to the soldiers of the Allied and Turkish armies."?

A: yes

Q: If Al, that's good., can we say that "That's ok too."?

A:
it is not possible to tell