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: "how many countries are taking part in eurovision 2018?" whose answer is forty-two.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Eurovision 2018 participants
Useful Output:

Doc 1: Participants · Bence Brucker · Dániel Kökényes · Soma Schiszler · Örs Siklósi · Áron Veress.
Doc 2: 2018 PARTICIPATING COUNTRIES · Albania (RTSH) · Armenia (AMPTV) · Australia (SBS) · Austria (ORF) · Azerbaijan (ICTIMAI) · Belarus (BTRC) · Belgium (
Doc 3:  Countries participate at the 2018 Eurovision Song Contest in Lisbon  Eurovision 2009 | All Participants | RECAP. Misja Eurowizja•39K views.
Doc 4: Today a press conference took place in Lisbon, the capital of Portugal. The logo and slogan for the 2018 Eurovision Song Contest were
Doc 5: First to announce their votes were the national juries from all the participating countries. Austria won the jury vote, followed by Sweden and Israel.