Analyzer
Sentence analysis
8Spans
Sentence
Span Details
両国
both countries; Ryōgoku (area of Tokyo)noun
は
topic markergrammar
経済的
economic; financial; economical; thrifty; frugalna-adjective
な
adnominal form of the copula after a na-adjectivegrammar
相互支援
mutual support; mutual aidnoun
を
object markergrammar
約束
promise; agreement; one's word; contract; appointment; engagement; date; convention; rule; destiny; fatenoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar