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: "who plays smithys sister in gavin and stacey?" whose answer is Sheridan Smith.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who plays smithy's sister in gavin and stacey
Useful Output:

Doc 1: Laura Aikman first appeared as Sonia in the last Christmas Day Gavin & Stacey episode in 2019 when Smithy brought his girlfriend to meet his family and friends.
Doc 2:  Gavin and Stacey script (Picture: BBC). Then again, so did Smithy's sister Rudi (Sheridan Smith) even though she did make it to his wedding
Doc 3: Sheridan Smith, who played Rudi, sister of James Corden's Smithy, has revealed that she hasn't been asked to join the Gavin and Stacey Christmas special.
Doc 4: 73.9K Likes, 247 Comments. TikTok video from BBC (@bbc): “Watch Gavin & Stacey's Smithy (James Corden) and Rudi (Sheridan Smith) hilariously
Doc 5: Sheridan Smith has returned as her fan favourite Gavin & Stacey character Rudi – the younger sister of Smithy – for the sitcom's final ever