Question: The class is named after the first ship in the class "Dmitriy Shostakovich", which in her turn was named after Dmitri Dmitriyevich Shostakovich, a Russian composer and pianist, regarded as one of the major composers of which century?
Sentence (from "Dmitri Shostakovich"): He is regarded as one of the major composers of the 20th century.
Relevant evidence: Yes