文

This is a typical sign you see on lamp posts throughout Japan.

スクール ゾーン - School Zone

文 (ぶん) - Sentence, Literature, Art

大阪市 (おおさかし) - Osaka City

Translation: School Zone

This type of sign is REPRESENTATIVE. As 文 is more of a cultural symbol for Learning rather than how its literal meaning of sentence as in 文を書きます。(ぶんをかきます - Write a sentence.)

And 文化 (ぶんか) is the word for culture. 

Other words include;

文学 (ぶんがく) - Literature

文章 (ぶんしょう) - Writing, Composition, Article, Essay

作文 (さくぶん) - Writing (an essay, prose), Composition

論文 (ろんぶん) - Thesis, Essay, Paper, Article

文 has other readings such as: ふみ、あや、モン that translate into words referring to arts, letters, style and others related to writing.

For more on this check your dictionary and language books to learn more.

じゃ、今日は以上です。

ジョシュア