Analyzer
Sentence analysis
8Spans
Sentence
Span Details
この
this; last (couple of years, etc.); these; past; you (as in "you liar")-> 此のpre-noun adjective
古城
old castle; old fortressnoun
は
topic markergrammar
かつて
once; before; formerly; ever; never yet; never before; first time-> 嘗てadverb, no-adjective
難攻不落
impregnable; unassailablenoun, no-adjective
の
possession, attribution, nominalizer, or nominal linkergrammar
要塞
fort; stronghold; fortificationnoun
だった。
past copulagrammar