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 wrote age aint nothing but a number?" whose answer is R. Kelly.
Each document should contain about 30 words, and these documents should contain useful information.

Query: "Age ain't nothing but a number" origin
Useful Output:

Doc 1: Originally Answered: What does the phrase "age ain't nothing but a number" mean? ·. The word “ain't” is an informal colloquial contraction
Doc 2: Age Ain't Nothing But a Number arrived on May 24, 1994. Although Aaliyah was just 15, critics couldn't help but notice how sultry and smooth the
Doc 3:  Age Ain't Nothing but a Number' on All That Show 1995. Relive the  Happy Black History Month! | This was lowkey kinda fun to make
Doc 4: Then, singer Aaliyah's “Age Ain't Nothing But a Number” can be fully questioned in the context of adult-onset T1D. See accompanying article, p.
Doc 5: As a history enthusiast, I've often drawn motivation from the past  Age ain't nothing but a