Question: The Kronverk, is a ground fortification for the Sts. Peter and Paul Fortress in Saint Petersburg, in which country?
Sentence (from "Peter and Paul Fortress"): The Peter and Paul Fortress is the original citadel of St. Petersburg, Russia, founded by Peter the Great in 1703 and built to Domenico Trezzini's designs from 1706 to 1740.
Relevant evidence: Yes