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Sentence analysis
8Spans
Sentence
Span Details
部室
clubroomnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
鍵
key; lock; key (to a problem, success, etc.); cluenoun
を
object markergrammar
職員室
staff room; teachers' roomnoun
に
direction, time, indirect object, or target markergrammar
返し
return; give back; put back; turn over; flip; overturn; pay back; repay; retaliate; reply; answer back; retort; do back; return an action; do again; redo; repeat-> 返すgodan verb, auxiliary
た。
past tense or completed actiongrammar