Complex sentence: The song is described by writer Mark Lewisohn as "pure Lennon genius... one of the most original pop music songs recorded to date", and by music critic Richie Unterberger as "undoubtedly the Beatles' greatest lyrical triumph during their folk-rock phase".
Split into simpler sentences: The song is described by writer Mark Lewisohn as, "pure Lennon genius... one of the most original pop music songs recorded to date". Music critic Richie Unterberger wrote, "undoubtedly the Beatles' greatest lyrical triumph during their folk-rock phase".