Analyzer
Sentence analysis
10Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
天体学
uranographynoun
の
possession, attribution, nominalizer, or nominal linkergrammar
古い
old; aged; antique; long-standing; time-honored; of the distant past; stale; hackneyed; corny; old-fashioned; outmoded; out-of-datei-adjective
文献
literature; reference materials; documentsnoun
を
object markergrammar
研究
research; study; investigationnoun, suru verb
し
light/support verb with a noun or noun-like phrase-> するgrammar
ている。
ongoing or resultant stategrammar