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: "English architect and polymath Robert Hooke was the first to build the Gregorian telescope invented by which Scottish mathematician?" whose answer is James Gregory.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Gregorian telescope inventor
Useful Output:

Doc 1: A good example of a Gregorian telescope, so named after its inventor James Gregory, 1638-1675. The shagreen cased Scope with external focus
Doc 2: The Gregorian telescope is a type of reflecting telescope that was first published by Scottish mathematician James Gregory in 1663. It is known
Doc 3: The meaning of GREGORIAN TELESCOPE is a reflecting telescope  Word History. Etymology. James Gregory †1675 Scottish mathematician and inventor + English -an
Doc 4: Discoverer or inventor. James Gregory (1670). Has part(s). concave  Gregorian reflecting telescope, Johann Gottlob Rudolph, Miltitz, c.
Doc 5: The design was first proposed by James Gregory (1638-75) in 1663 and Isaac Newton (1643-1727) created a working example in 1668. But it was not until the