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Sentence analysis
5Spans
Sentence
Span Details
階段室
stairwell; stair hall; staircasenoun
に
direction, time, indirect object, or target markergrammar
窓
windownoun
が
subject markergrammar
ある。
be; exist; have; possess; there is available; be located; be situated; be equipped with; have as a facility or feature; happen; take place; come about; be in a completed state; be left as done-> 有るgodan verb, auxiliary