AnalyzerSentence analysis6SpansSentence希少金属の安定供給が課題だ。1000 character limitAnalyzeSentence希き少しょう金きん属ぞくの安あん定てい供きょう給きゅうが課か題だいだ。Span Details希き少しょう金きん属ぞくrare metal; minor metalnounのpossession, attribution, nominalizer, or nominal linkergrammar安あん定てい供きょう給きゅうstable supply; reliable supplynounがsubject markergrammar課か題だいsubject; theme; issue; homework; assignment; problem to solve; task; challenge; route; problem (climbing)nounだ。plain copulagrammar