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 was assassinated in 1968 while campaigning for the presidency?" whose answer is Robert F. Kennedy.
Each document should contain about 30 words, and these documents should contain useful information.

Query: who was assassinated in 1968 while campaigning for the presidency
Useful Output:

Doc 1: Robert F. Kennedy won the California Democratic presidential primary. Shortly after he wrapped up his victory speech in Los Angeles, he was shot by an assassin.
Doc 2: On New Year's Day 1968, the shadow of the Vietnam War hovered over everything, including the Civil Rights Movement. Albion College and the
Doc 3: Approximately 10000 pages of records were released Friday, continuing the disclosure of national secrets ordered by U.S. President Donald
Doc 4: After Martin Luther King was killed, many believed senator and presidential hopeful Robert Kennedy was going to carry on the reforming fight.
Doc 5: Robert F. Kennedy seemed to be on the fast track to becoming the next American president. His campaign started late, announcing his presidential