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 is the first president to be assassinated?" whose answer is Abraham Lincoln.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first U.S. president assassinated
Useful Output:

Doc 1: On April 20, 1865, President Abraham Lincoln became the first U.S. president assassinated in the history of the country.  The assassination of
Doc 2: The original plot was to kidnap President Lincoln. Then John Wilkes Booth and his co-conspirators changed their plans to murder him, Secretary of State William
Doc 3: The first President assassinated was Lincoln, who was shot on Good Friday, April 14, 1865, at a theater performance he had not wished to attend. He had gone
Doc 4: On July 13, gunshots rang out at a campaign rally for Donald Trump in Butler, Pennsylvania. One of the shots grazed the former president's
Doc 5: Abraham Lincoln and James A. Garfield were the first and second presidents to be assassinated. · Attitudes towards Lincoln's assassination were