Analyzer
Sentence analysis
9Spans
Sentence
Span Details
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
研究
research; study; investigationnoun, suru verb
は
topic markergrammar
問題
question; problem (on a test); problem; issue; matter; doubt; public discussion; controversy; trouble; difficulty; inconveniencenoun
に
direction, time, indirect object, or target markergrammar
光
light; illumination; ray; beam; glow; hope; happiness; bright prospect; influence; power; prestige; vision; eyesight; optical fiber; fiber-optic internetnoun
を
object markergrammar
当て
hit; strike; expose; direct at; apply; put on; hold against; allot; assign; call on; guess; predict; win; hit the jackpot-> 当てるichidan verb
た。
past tense or completed actiongrammar