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 do the afl semi finals start 2018?" whose answer is Friday, September 14.
Each document should contain about 30 words, and these documents should contain useful information.

Query: afl semi-finals 2018 start date
Useful Output:

Doc 1: Never fear we have all you need to know about what's happening on AFL Grand Final day. Herald Sun Staff. 2 min read. September 29, 2018
Doc 2: Richmond will host Collingwood at the MCG at 7:25pm on Friday September 21 in the Second Semi Final. The Pies defeated GWS in a thrilling semi-
Doc 3: If the higher placed sides win all four games in the first week, we are likely to see two blockbuster Semi Finals pitting Hawthorn and Melbourne
Doc 4: AFL finals live: Collingwood Magpies beat GWS Giants to book date with Richmond Tigers. Topic:Australian Rules Football. Sat 15 Sep 2018
Doc 5: First semi-final: Hawthorn Hawks vs Melbourne Demons 7:50pm AEST Friday September 14, MCG ; Second semi-final: Collingwood Magpies vs GWS Giants