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Australia clinched a spot in the Rugby World Cup final with a thrilling victory over Argentina at Twickenham on Sunday night. The Wallabies seized a 13-point lead bolstered by three tries in the first half, including two from Adam Ashley-Cooper. An inspired Argentina put on a brave fight in a nail-biting second half, coming close to two tries despite being three men down. But the Pumas had to succumb to a third Ashley-Cooper try in the 72nd minute. The Wallabies will now face defending champions New Zealand in a Trans-Tasman final on Sunday.