AnalyzerSentence analysis3SpansSentence後方互換性を保つ1000 character limitAnalyzeSentence後こう方ほう互ご換かん性せいを保たもつSpan Details後こう方ほう互ご換かん性せいbackward compatibility; downward compatibilitynounをobject markergrammar保たもつkeep; maintain; preserve; last; be durablegodan verb