Adhere to が以下の例文ではto which S adhere と関係代名詞によって前に出ている
Mick Jagger added to the confusion by scrambling the vocals, which were deliberately mixed down into the instrumental tracks, In doing so, he was taking Fats Domino's advice, "You should never sing the words out very clearly," a philosophy to which the Stones lead singer adhere on more than one occasion.
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