tech,4-1-A92-1027,ak We present an efficient <term> algorithm </term> for <term> chart-based phrase structure parsing </term> of <term> natural language </term> that is tailored to the problem of extracting specific <term> information </term> from <term> unrestricted texts </term> where many of the <term> words </term> are unknown and much of the <term> text </term> is irrelevant to the task .
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