Question: The song appearing in the EP, Gold Skies, that reached 21 on "Billboard" was released in what year?
Sentence (from "Isolation (John Lennon song)"): In the Philippines Apple Records released "Isolation" as the b-side to "Mother", the single off "John Lennon/Plastic Ono Band", in contrast to most countries where the b-side was Yoko Ono's "Why."
Relevant evidence: No