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Sentence
Span Details
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
習慣
habit; customary behavior; custom; practice; convention; traditionnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
起源
origin; beginning; sourcenoun
は
topic markergrammar
中世
Middle Ages; medieval timesnoun
に
direction, time, indirect object, or target markergrammar
さかのぼり
go upstream; go up a river; go back in time; date back to; trace back to; be retroactive-> 遡るgodan verb
ます。
polite non-pastgrammar