Question: What's the nearest city to Craigmillar Castle, a ruin used as an arts venue by the Craigmillar Festival Society?
Sentence (from "Craigmillar Castle"): The Preston family of Craigmillar, the local feudal barons, began building the castle in the late 14th century and building works continued through the 15th and 16th centuries.
Relevant evidence: No