Complex sentence: Mersh is the penultimate release (final extended play, or EP release) from the American punk rock trio Minutemen before D. Boon's death later that year in an auto accident.
Split into simpler sentences: Mersh is the final extended play, or EP release from the American punk rock trio Minutemen. It is their penultimate release, before D. Boon's death later that year in an auto accident.