sore ha zizitu desu.

It is read:

それはじじつです。
Romanized: sore wa jijitsu desu

A natural pronunciation is often closer to sore wa jijitsu des in casual speech, because the u in desu is often very light or almost silent.

それ usually means that, but depending on context it can also be translated as it.

In Japanese, words like これ / それ / あれ depend on where the thing is in relation to the speaker and listener:

• これ = this
• それ = that (near you, or something just mentioned)
• あれ = that over there

In this sentence, それ often refers to something that was just said or something both people know about.

This is one of the first unusual things learners notice.

The character は is normally read ha, but when it is used as the topic particle, it is pronounced wa.

So in this sentence:

• written: それは
• pronounced: sore wa

This is a fixed grammar rule, not an exception just for this sentence.

は marks the topic of the sentence.

So それは means something like:

• as for that
• speaking of that
• that ...

Then the rest of the sentence says something about that topic:

• 事実です = is a fact

So the structure is roughly:

• それは = as for that
• 事実です = is a fact

A natural English translation is simply That is a fact.

事実 means fact or reality.

It is read じじつ (jijitsu).

Some related ideas:

• 事 = matter, thing, event
• 実 = truth, reality

Together, 事実 means something like the actual truth of a matter.

In everyday translation, fact is usually the best choice.

です is the polite form of the Japanese copula, similar to is / am / are in very simple explanations.

So:

• 事実です = is a fact

More literally, it is like saying it is fact or it is a fact, though Japanese does not use articles like a and the the way English does.

です also makes the sentence polite.

Japanese does not have articles like English a, an, and the.

So 事実です does not explicitly say:

• a fact
• the fact

The exact English wording depends on context.

That is why それは事実です can naturally become:

• That is a fact.
• That’s true.
• That is the truth.

It is polite and neutral because it ends with です.

So it is appropriate in many normal situations, such as conversation, writing, or polite discussion.

A less polite / plain version would be:

それは事実だ。

That version may sound firmer, more direct, or more casual depending on context.

Yes, often you could.

Even though 事実 literally means fact, in context the sentence may function like:

• That’s true.
• That is true.
• That is a fact.

The best translation depends on tone:

• That is a fact sounds stronger and more emphatic.
• That’s true sounds more natural in many everyday English situations.

Using は makes それ the topic: as for that...

So それは事実です presents that as the thing being discussed and then comments on it.

If you used が instead, the nuance would change. それが事実です can sound more like:

• That is the fact
• That is what is true
• That is the key fact

In other words:

• は = topic, more general statement
• が = subject, often more specific or contrastive/focused

For beginners, それは事実です is the more straightforward pattern to learn first.

No. Normal Japanese writing does not usually use spaces between words.

So the standard writing is:

それは事実です。

Learner materials often add spaces to make the sentence easier to read at first.

Yes, very often.

In Japanese, それ can point to:

• a thing
• an idea
• a statement
• something that just happened
• something the other person said

For example, if someone makes a claim, you can respond with:

それは事実です。

meaning:

• That is a fact.
• What you said is true.

So それ is often broader than just a physical that.

Yes, it is natural, but it has a somewhat firm tone because 事実 is a strong word.

It sounds like an assertion of truth, such as:

• That is a fact.
• That’s the truth.

In softer everyday conversation, people might also say things like:

• それは本当です。 = That is true.
• 本当です。 = It’s true.

So それは事実です is natural, but it can feel a little more definite or serious than some other options.