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<p>America (though some research continued elsewhere, such as Japan and Europe) until the late 1980s when the first <a href="page.php?w=statistical_machine_translation">statistical machine translation</a> systems were developed.<br/>
* <b>1960s</b>: Some notably successful natural language processing systems developed in the 1960s were <a href="page.php?w=SHRDLU">SHRDLU</a>, a natural language system working in restricted "<a href="page.php?w=blocks_world">blocks world</a>s" with restricted vocabularies, and <a href="page.php?w=ELIZA">ELIZA</a>,</p><p>
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