Question: Which influential composer of piano music was active later in the 20th century: Dmitri Shostakovich or Philip Glass?
Sentence (from "Dmitri Shostakovich"): Dmitri Dmitriyevich Shostakovich (Russian: Dmitriy Dmitrievich Shostakovich , ] ; 25 September [O.S. 12 September] 1906 9 August 1975) was a Russian composer and pianist.
Relevant evidence: Yes