不思議なのは彼がそれを知っていたことだ。

Sentence Analyzer

不思議な それ 知っていた こと

English Translation

The marvel is that he knew it.

Furigana

不思議(ふしぎ)なのは(かれ)がそれを()っていたことだ。

Romanji

Fushigina no wa kare ga sore o shitteita koto da.

Words

不思議 (ふしぎ)
wonder; miracle; strange; mystery; marvel; curiosity
()
indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
(かれ)
he; him; his; boyfriend
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
其れ (それ)
that (indicating an item or person near the listener, the action of the listener, or something on their mind); it; that time; then; there (indicating a place near the listener); you
()
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
知る (しる)
to be aware of; to know; to be conscious of; to cognize; to cognise; to notice; to feel; to understand; to comprehend; to grasp; to remember; to be acquainted with (a procedure); to experience; to go through; to learn; to be acquainted with (a person); to get to know; to concern
(こと、こん)
thing; matter; incident; occurrence; event; something serious; trouble; crisis; circumstances; situation; state of affairs; work; business; affair; after an inflectable word, creates a noun phrase indicating something the speaker does not feel close to; nominalizing suffix; pretending to ...; playing make-believe ...; alias; aka; nickname; alternative name; also known as
()
be; is; indicates past or completed action; indicates light imperative

Kanji

Readings: フ、 ブ
Meanings: negative, non-, bad, ugly, clumsy
Readings: シ、 おも.う、 おもえら.く、 おぼ.す
Meaning: think
Reading: 
Meanings: deliberation, consultation, debate, consideration
Readings: ヒ、 かれ、 かの、 か.の
Meanings: he, that, the
Readings: チ、 し.る、 し.らせる
Meanings: know, wisdom