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Of course, a more complex version of the sentence is "In 2003, they reunited when they received a Grammy Lifetime Achievement Award, leading to a US tour: the acclaimed''Old Friends' concert series".<unk> Of course, a more complex version of the sentence is "In 2003, they reunited when they received a Grammy Lifetime Achievement Award, leading to a US tour: the acclaimed'' 'Old Friends' concert series".<unk>