Analyzer
Sentence analysis
8Spans
Sentence
Span Details
研究
research; study; investigationnoun, suru verb
に
direction, time, indirect object, or target markergrammar
は
topic markergrammar
忍耐強い
persevering; very patienti-adjective
努力
effort; hard work; endeavornoun, suru verb
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar