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Sentence analysis
9Spans
Sentence
Span Details
貴石
precious stone; jewel; gemnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
鑑定
expert appraisal; judgment; authenticationnoun, suru verb, no-adjective
に
direction, time, indirect object, or target markergrammar
は
topic markergrammar
専門知識
expertise; specialized knowledge; technical knowledgenoun
が
subject markergrammar
必要
necessary; needed; essential; necessity; need; requirementna-adjective, noun
だ。
plain copulagrammar