You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "who said a house divided cannot stand?" whose answer is Abraham Lincoln.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of the quote "A house divided against itself cannot stand"
Useful Output:

Doc 1: Before Abraham Lincoln was president, he said this as part of his campaign: "A house divided against itself cannot stand.
Doc 2: Lincoln's central warning – “A house divided against itself cannot stand” – was rich in moral significance. A house should rest on a firm
Doc 3: 166 years after Abraham Lincoln's remark that “a house divided against itself cannot stand,” political polarization remains an issue in the
Doc 4: When Abraham Lincoln said “a house divided against itself cannot stand,” he wasn't talking about the kind of political divisions common today.
Doc 5: Although, the correct quote (from Lincoln) is “a house divided against itself cannot stand”, was used by him a few years before the war broke