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 episodes were in the South Korean television series in which Ryu Hye-young played Bo-ra?" whose answer is 20.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Ryu Hye-young Bo-ra TV series
Useful Output:

Doc 1: That is Bora (Ryu Hye Young), the eldest daughter of the Sung family, who is worthy of the title “the mean girl” of Ssangmundong.
Doc 2: TV Series. ”Spy' as Noh Eun Ah (KBS2/ 2015) 'Heart To Heart' as Lee Eun Ho/ Lee Jin Ho (tvN/ 2015) 'Reply 1988' as Sung Bo Ra (tvN/ 2015–2016)
Doc 3: Ryu Hye Young is a South Korean actress and model. She is best known for her role as Sung Bo Ra in the hit drama series Reply 1988.
Doc 4: The photo shows Ryu Hye Young, who is playing in drama 'Reply 1988' as Sung Bo Ra, posing with Hye Ri, who is playing as Sung Bo Ra's younger
Doc 5: Di sisi lain, Duk Sun juga memiliki seorang kakak perempuan yang bernama Bo Ra, diperankan oleh Ryu Hye Young. Seperti layaknya kakak adik