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Sentence
Span Details
インフルエンザウイルス
influenza virusnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
抗原
antigennoun
変異
unusual occurrence; anomaly; variation; mutationnoun, suru verb
は
topic markergrammar
免疫逃避
immune evasion; antigenic escapenoun
の
possession, attribution, nominalizer, or nominal linkergrammar
一因
one cause; one factor; one reasonnoun
である。
formal copulagrammar