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Sentence analysis
8Spans
Sentence
Span Details
冬山
wintry mountain; mountain in winter; mountain popular for winter climbingnoun
登山
mountain climbing; mountaineering; ascent of a mountainnoun, suru verb
に
direction, time, indirect object, or target markergrammar
は
topic markergrammar
アイゼン
crampons; climbing ironsnoun
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar