Complex sentence: Meanwhile, he walked to the local post office every morning to check for Yoko Ono's almost daily telegrams such as the one saying: "Look up at the sky and when you see a cloud think of me".
Split into simpler sentences: Meanwhile, he walked to the local post office every morning to check for Ono's almost daily telegrams. One of these telegrams read: "Look up at the sky and when you see a cloud think of me".