Analyzer
Sentence analysis
8Spans
Sentence
Span Details
空集合
empty setnoun
は
topic markergrammar
任意
optional; voluntary; any; arbitraryno-adjective, noun
の
possession, attribution, nominalizer, or nominal linkergrammar
集合
meeting up; gathering; assembly; setnoun, suru verb
の
possession, attribution, nominalizer, or nominal linkergrammar
部分集合
subsetnoun
である。
formal copulagrammar