AnalyzerSentence analysis6SpansSentence低周波地震はスロー地震の一種だ。1000 character limitAnalyzeSentence低てい周しゅう波は地じ震しんはスロー地じ震しんの一いっ種しゅだ。Span Details低てい周しゅう波は地じ震しんlow-frequency earthquakenounはtopic markergrammarスロー地じ震しんslow earthquakenounのpossession, attribution, nominalizer, or nominal linkergrammar一いっ種しゅa kind; a sort; a variety; a species; a sort of; of sorts; something of a; sort of; somewhatnoun, adverbだ。plain copulagrammar