Suspected natural gas reserves have yet to be proved, but they bear the potential to help Europe hedge against uncomfortable reliance on energy from Russian pipelines.

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Although we have not yet found a match for my mom, at least six of these people have proved to be potential matches for other people desperately needing a transplant.

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Yet Claire Tomalin, whose studies of Mary Wolstonecraft, Nellie Ternan and Dorothea Jordan have proved her to be one of our most painstaking, distinguished and sympathetic biographers, has produced a portrait of remarkable subtlety.

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