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Sentence analysis
10Spans
Sentence
Span Details
かつて
once; before; formerly; ever; never yet; never before; first time-> 嘗てadverb, no-adjective
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
地域
area; region; district; localitynoun
は
topic markergrammar
赤線地帯
red-light districtnoun
として
as; in the role ofgrammar
知ら
know; be aware of; learn; find out; sense; feel; notice; realize; understand; comprehend; grasp; appreciate; remember; be familiar with; be acquainted with; experience; go through; know (hardship); get to know; get acquainted with; have to do with; be concerned with; be one's responsibility-> 知るgodan verb
れ
passive, potential, or respect auxiliary-> れる/られるgrammar
てい
ongoing or resultant state-> ているgrammar
た。
past tense or completed actiongrammar