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: "Which country participated in the Eurovision Song contest in 1957 but absent in 1970 and submitted the song co-written by Sebastian F. Ovens?" whose answer is Denmark.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Sebastian F. Ovens Eurovision
Useful Output:

Doc 1: Det blev trioen "Lighthouse X", der vandt Dansk Melodi Grand Prix 2016 i Forum Horsens lørdag aften med sangen "Soldiers of Love".
Doc 2: Lighthouse X vandt konkurrencen med sangen “Soldiers of Love”, skrevet af Sebastian F. Ovens og Daniel Lund Jørgensen. De repræsenterede
Doc 3: /eurovision?sub_confirmation=1 ​ Red Sebastian is living his childhood dream by representing Belgium at the Eurovision Song Contest. He's
Doc 4: Red Sebastian will represent Belgium at Basel 2025, after his song 'Strobe Lights' won the country's Eurovision pre-selection 'Eurosong'.
Doc 5: Red Sebastian with “Strobe Lights” has won Eurosong 2025 and will represent Belgium at Eurovision in Basel!