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Sentence analysis
13Spans
Sentence
Span Details
互恵的利他主義
reciprocal altruismnoun
は、
topic markergrammar
生物
living thing; organism; creature; life; biologynoun
の
possession, attribution, nominalizer, or nominal linkergrammar
協力
cooperation; collaboration; help; supportnoun, suru verb
行動
action; conduct; behavior; mobilizationnoun, suru verb, no-adjective
を
object markergrammar
説明
explanation; description; accountnoun, suru verb
する
light/support verb with a noun or noun-like phrasegrammar
理論
theorynoun
の
possession, attribution, nominalizer, or nominal linkergrammar
一つ
one; for one thing; only; just; (not) even one; just (try it); a little; some kind of; one type ofnumeric, noun, adverb, no-adjective
だ。
plain copulagrammar