dai-19-kai-zenkoku-taikai-hokoku-%e7%ac%ac19%e5%9b%9e%e5%85%a8%e5%9b%bd%e5%a4%a7%e4%bc%9a%e5%a0%b1%e5%91%8a-report-on-the-19th-national-convention-r3mp47sl