Question: The best selling single of John Lennon's solo career was used as a teference by who to erect a memorial?
Sentence (from "Imagine (John Lennon song)"): The best-selling single of his solo career, its lyrics encourage the listener to imagine a world at peace without the barriers of borders or the divisions of religion and nationality, and to consider the possibility that the whole of humanity would live unattached to material possessions.
Relevant evidence: Yes