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: "Olga Arefieva was a student of a Russian singer, who was best known for his rendition of what song that was the closing ceremony theme song of the 1980 Summer Olympics?" whose answer is Do svidanja, Moskva.
Each document should contain about 30 words, and these documents should contain useful information.

Query: closing ceremony theme song 1980 Summer Olympics
Useful Output:

Doc 1: What was the greatest Opening and Closing Ceremony in Summer/Winter Olympics? 97 upvotes · 215 comments. In-person Opening Ceremony was awful.
Doc 2: President of the USSR and dignitaries arrive · Theme Song by Dmitri Shostakovich · Parade of Nations preceded by artistic parade of ancient Greek
Doc 3: When the band was approached to perform at the Olympic closing ceremony, he presented “Survival”, the song he had written as the event's theme.
Doc 4: 'All Tokyoites' Give Athletes A Taste Of Tokyo. The Tokyo Ska Paradise Orchestra provided the soundtrack to a segment designed to let athletes
Doc 5: Moscow Channel 7 Olympic theme song 1980. 24K views · 7 years ago  Summer Olympics TV Openers (1964-2024) | Compilation. ARCHIVE Sport