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 season 4 of peaky blinders come out?" whose answer is 15 November 2017.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did season 4 of peaky blinders come out
Useful Output:

Doc 1: Peaky Blinders Season 4 aired on BBC Two this past November and now all six episodes are available for streaming on Netflix. Does it feature
Doc 2: Peaky Blinder Season 4 will premiere somewhere in late 2017, more details about the series are released. The BBC television show featuring
Doc 3: The historical thriller has always been an exciting and intense watch and season four was no different as it saw some shocking deaths, hints of
Doc 4: More on Drama. TV · Peaky Blinders Season 4 Trailer, Release Date, Cast, Story and Everything to Know. November 20, 2017 | By Joseph Baxter.
Doc 5: The fourth series started airing on BBC Two on 15th November 2017, and the finale aired on 20th December 2017. How many episodes were in Peaky