ジョンは利口だ。
Sentence Analyzer
English Translation
John is clever.
Furigana
ジョンは利口 だ。
Romanji
Jon wa rikō da.
Words
は
(は)
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
利口
(りこう)
clever; intelligent; wise; bright; sharp; sensible; smart; shrewd; well-behaved (of kids, animals, etc); obedient; good; good (with words)
だ
(だ)
be; is; indicates past or completed action; indicates light imperative