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: "which two us senators proposed and helped pass the investment platform roth ira?" whose answer is Senator William Roth of Delaware.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who proposed and helped pass the roth ira
Useful Output:

Doc 1: Roth IRAs are named after former Delaware Senator William V. Roth, Jr., who was instrumental in legislation passed into law in 1997 that
Doc 2: A Roth IRA (aka Individual Retirement Account) is a retirement account that lets you save up to a certain amount each year for retirement.
Doc 3: Roth congratulates Joe Biden on his recovery from a brain aneurysm. Recorded September 7, 1988. Roth was a sponsor of legislation creating the Roth IRA, an
Doc 4: William Roth Jr., a Delaware Republican, pushed through a law establishing the Roth IRA in 1997 to allow “hard-working, middle-class Americans”
Doc 5: The proposed reform stems from a ProPublica story that detailed how PayPal founder Peter Thiel had amassed $5 billion, tax-free, in a Roth IRA.