Question: In which state of America will you find the Berlin Historic District which encompasses the ghost town of Berlin established as part of the Union Mining District and Berlin–Ichthyosaur State Park, a recreation area and historic preserve that protects ichthyosaur fossils and the ghost town?
Sentence (from "Berlin Historic District (Berlin, Nevada)"): The site was acquired by the state of Nevada as part of Berlin–Ichthyosaur State Park in 1970.
Relevant evidence: No