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Syntactic Tree Viewer

This is a d3.js-based tree viewer that allows you to expand and collapse tree nodes and pan/zoom to different areas of the tree. Input the bracketed tree that you want to view in the box above and press "View Tree". The viewer has been designed to work with Penn Treebank (.mrg) and CCGbank (.auto) style trees.
(Click on the links to try an example)
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