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: "he phrase survival of the fittest was coined by?" whose answer is Herbert Spencer.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of the phrase "survival of the fittest"
Useful Output:

Doc 1: You might not know this full quotation, but you might be familiar with the shorter phrase, “survival of the fittest”.  meaning of a word in a
Doc 2: We read in Wikipedia: "Survival of the fittest is a phrase that originated from Darwinian evolutionary theory as a way of describing the
Doc 3: Survival of the fittest, term made famous in the fifth edition of On the Origin of Species by Charles Darwin, which suggested that organisms
Doc 4: Charles Darwin not only did not coin the phrase “survival of the fittest  In “On the Origin of Species,” he wrote: “it hardly seems
Doc 5: The phrase 'survival of the fittest' is often incorrectly attributed to Charles Darwin, who is known for transforming the way we understand