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: "when did 21 cfr part 11 become effective?" whose answer is 1997.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did 21 cfr part 11 become effective
Useful Output:

Doc 1: Through Part 211.68, US FDA guidances such as CPG 7132a.11 and the Data Integrity[2], I will make evident that Part 11 regulation was not
Doc 2: When the regulation was enacted in 1997, it was lauded as a landmark rule. At long last the use of electronic record-keeping systems is
Doc 3: 21 CFR Part 11 was established in 1997 to ensure that electronic records and signatures are just as reliable and trustworthy as paper records
Doc 4: Federal Regulation CFR Title 21 Part 11 provides a framework for managing electronic records and electronic signatures in a manner that
Doc 5: CFR Title 21 Part 11 sets requirements to ensure that electronic records and signatures are trustworthy, reliable, and equivalent substitutes for paper records