Final answer:
The question is about an omitted verse from a song on an album released in 1971, which is frequently included in live performances and recordings. Artists often revise their work, adding depth or different interpretations.
Step-by-step explanation:
The question refers to a verse from a song originally released on the album Songs of Love and Hate in 1971 and a poem in the album The Future from 1992. Such instances occur when an artist chooses to omit certain parts of a song in the official recording, which may be due to various reasons including the overall flow of the album, time constraints, or the artist's preference at the time of recording. However, these omitted parts might be added in during live performances or in later recordings to add depth or present a different interpretation of the song or poem. It is not unusual for artists, particularly those who have long careers and a profound body of work, to revisit and revise their material over time.