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Sentence analysis
8Spans
Sentence
Span Details
地震予知
earthquake predictionnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
研究
research; study; investigationnoun, suru verb
は
topic markergrammar
長年
many years; a long timenoun, adverb
続け
continue; keep doing; keep up; continue to ...; keep on ...-> 続けるichidan verb, auxiliary
られ
passive, potential, or respect auxiliary-> れる/られるgrammar
ている。
ongoing or resultant stategrammar