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