Question: What is the date of death of the composer of song Prabhat Samgiita?
Sentence (from "Prabhat Ranjan Sarkar"): Prabhat Ranjan Sarkar (21 May 1921 – 21 October 1990), also known by his spiritual name, Shrii Shrii Ánandamúrti (Ánanda Múrti, "Bliss Embodiment"), and known as Bábá ("Father") to his disciples, was a Spiritual Guru, Indian philosopher, yogi, author, poet, composer, and linguist.
Relevant evidence: Yes