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'Frozen 2' delivers for those willing to chill out and enjoy

(CNN)The alchemy that made "Frozen" such a monster hit can't be easily replicated, and isn't entirely in its six-years-later sequel. But "Frozen 2" delivers enough of what made the original hum to warm the hearts of a generation of tykes that have gobbled it up, while almost certainly adding happiness to Disney's holidays.To their credit, the filmmakers haven't completely rested on their laurels, but for better and worse have bitten off a whole lot in terms of the story, which -- set three years after the first movie -- moves relationships forward while going back to address sins of the past. That includes dredging up Elsa and Anna's family history, and the source of former's fantastical powers.There's a bit of messiness in that, but fortu ...