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https://openhackfarm.wordpress.com/2019/03/23/open-hack-farm-x-%e5%8d%97%e6%96%b9%e5%89%b5%e5%ae%a2%e5%9f%ba%e5%9c%b0-%e5%ae%b6%e5%ba%ad%e5%a0%86%e8%82%a5%e8%a3%bd%e4%bd%9c/
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