その計画は机上の空論ではなく、現実的な基盤がある

N5 その sono that, that one near listener N4 計画 keikaku plan, project, schedule N5 机 tsukue desk N5 上 ue on / above N5 空 sora sky N5 では dewa then, well, in that case N3 現実 genjitsu reality, real fact N2 基盤 kiban foundation, basis

N1 基 ki / moto, motoi fundamentals, radical (chem), counter for machines N1 盤 ban tray, shallow bowl, platter

N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜の no Indicates possession, relation between nouns, nominal explanation, or turns a verb into a noun phrase N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information