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: "when does season 15 grey's anatomy premiere?" whose answer is September 27, 2018.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Grey's Anatomy Season 15 premiere date
Useful Output:

Doc 1: ABC's Grey's Anatomy returned for its 15th season with an eventful two-hour premiere Thursday that set the stage for what to expect from what
Doc 2: The history-making 15th season of Grey's Anatomy debuted tonight with a two-hour premiere on ABC. The series picks up the morning after the wedding of Alex
Doc 3: Season 15 premieres on September 27. Set your DVRs for Grey's Anatomy's two-hour premiere on Thursday, September 27, at 8 pm.
Doc 4: My 100-percent accurate crystal ball states that the show will return for its landmark season on Thursday, Sept. 27… which means that fans will
Doc 5: No official date has been set for the Season 15 premiere, but expect it to air sometime in September with ABC's other dramas.