Analyzer
Sentence analysis
6Spans
Sentence
Span Details
長期間
long period; long term; extended periodnoun, adverb, no-adjective
の
possession, attribution, nominalizer, or nominal linkergrammar
計画
plan; project; schedule; programnoun, suru verb
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar