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: "is the first round of nhl playoffs best of 5 or best of 7?" whose answer is best-of-seven.
Each document should contain about 30 words, and these documents should contain useful information.

Query: NHL playoffs format
Useful Output:

Doc 1: Read on for the full playoff picture, including previews, analysis, highlights, scores and more for each team and series.
Doc 2: Each round features best-of-seven series, with home ice given to the higher-placed team in the regular season standings.
Doc 3: The Stanley Cup playoffs comprise four rounds with winners determined by best-of-seven game series. Teams with the higher regular-season point
Doc 4: The format is a set bracket that is largely division-based with wild cards. The top three teams in each division will make up the first 12 teams
Doc 5: Currently, the NHL awards two points for any win and one point for a loss in overtime or a shootout. The theory is that the 3-2-1 system would