During the Golden age of Jewish culture in Spain, important work was done by grammarians in explaining the grammar and vocabulary of Biblical Hebrew; much of this was based on the work of the grammarians of Classical Arabic. Important Hebrew grammarians were Judah ben David Hayyuj, Jonah ibn Janah, Abraham ibn Ezra and later (in Provence), David Kimhi. A great deal of poetry was written, by poets such as Dunash ben Labrat, Solomon ibn Gabirol, Judah ha-Levi, Moses ibn Ezra and Abraham ibn Ezra, in a "purified" Hebrew based on the work of these grammarians, and in Arabic quantitative or strophic meters. This literary Hebrew was later used by Italian Jewish poets.