Analyzer
Sentence analysis
8Spans
Sentence
Span Details
彼
he; him; boyfriendpronoun
は
topic markergrammar
郷土史
local historynoun
の
possession, attribution, nominalizer, or nominal linkergrammar
研究
research; study; investigationnoun, suru verb
に
direction, time, indirect object, or target markergrammar
熱心
enthusiastic; eager; zealousna-adjective, noun
だ。
plain copulagrammar