Complex sentence: It is believed that it was Krishnamurti's wish to have a school in Western India, and after he breathed his last (1986), the Foundation began working on the setting up of this school.
Split into simpler sentences: It is believed that it was J. Krishnamurti's wish to have a school in Western India. However, it was only after his death in 1986 that the Foundation began working on the setting up of this school.