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Opinion mining techniques emerge and focus on the opinion model which is composed of topic, holder, claim and sentiment for a long time. It has achieved fruitful results.

意见挖掘技术应运而生，人们围绕着意见的主题、持有者、陈述和情感四元素展开了许多研究，取得了丰硕的成果。

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Mining firms claim some success in influencing their workers' nocturnal habits, though hard evidence of changed behaviour is scanty.

ECONOMIST: South African firms are struggling to cope as AIDS spreads

They claim the Pombo bill is catering to timber interests, mining interests, power companies and big agribusiness.

CNN: Is Endangered Species Act in danger? - Sept. 26, 1995

If that claim is on public land, absolutely nothing according to the General Mining Act of 1872.

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