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Sentence analysis
7Spans
Sentence
Span Details
教授
professor; teaching; instructionnoun, suru verb
が
subject markergrammar
環境問題
environmental problem; environmental issuenoun
に
direction, time, indirect object, or target markergrammar
ついて
about; concerning; regarding-> 就いてexpression
講演
lecture; address; speechnoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar