AnalyzerSentence analysis4SpansSentence後方互換を確保する1000 character limitAnalyzeSentence後こう方ほう互ご換かんを確かく保ほするSpan Details後こう方ほう互ご換かんbackward compatible; downward compatibleno-adjective, nounをobject markergrammar確かく保ほsecure; obtain; ensure; maintain; belay; belayingnoun, suru verbするlight/support verb with a noun or noun-like phrasegrammar