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: "On which Expedition did Clayton Anderson replace Sunita Williams?" whose answer is Expedition 15.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Clayton Anderson replaced Sunita Williams
Useful Output:

Doc 1: Clayton Conrad Anderson is a retired NASA astronaut. Launched on STS-117, he replaced Sunita Williams on June 10, 2007 as a member of the ISS Expedition 15 crew
Doc 2: Clayton Conrad Anderson is a retired NASA astronaut. Launched on STS-117, he replaced Sunita Williams on June 10, 2007 as a member of the
Doc 3:  Anderson (born February 23, 1959) is a retired NASA astronaut . Launched on STS-117 , he replaced Sunita Williams on June 10, 2007, as a
Doc 4: Clayton Conrad Anderson is a retired NASA astronaut. Launched on STS-117, he replaced Sunita Williams on June 10, 2007 as a member of the ISS Expedition 15 crew
Doc 5: Clayton Conrad Anderson is a retired NASA astronaut. Launched on STS-117, he replaced Sunita Williams on June 10, 2007 as a member of the ISS Expedition 15