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 the emperor in revenge of the sith?" whose answer is Ian McDiarmid.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who plays the emperor in revenge of the sith
Useful Output:

Doc 1: Actor Ian McDiarmid playing both roles. The senator's name was Palpatine, same as the Emperor. Senator Palpatine and Darth Sidious were
Doc 2: Ian McDiarmid, the actor who plays the Sith lord Palpatine who eventually becomes the Emperor of the galaxy, has starred in more "Star Wars
Doc 3: Ian McDiarmid who plays Emperor Palpatine in Star Wars talks about Lightsaber Training for the prequel trilogy and in particular working
Doc 4:  Ian McDiarmid plays Emperor Palpatine in Star Wars: Episode III Revenge of the Sith.
Doc 5: Emperor Palpatine is one of the few characters to appear in all three trilogies of the Skywalker Saga, with McDiarmid portraying him across his