Complex sentence: Lennon wrote the song at a Transcendental Meditation camp when he could not sleep; the Beatles had gone on a retreat to study with the Maharishi Mahesh Yogi in Rishikesh, India.
Split into simpler sentences: Lennon wrote the song at a Transcendental Meditation camp when he could not sleep. The Beatles had gone on a retreat to study with the Maharishi Mahesh Yogi in Rishikesh, India.