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 came up with the idea of communism?" whose answer is Karl Marx.
Each document should contain about 30 words, and these documents should contain useful information.

Query: origin of communism
Useful Output:

Doc 1: What Are the Origins of Communism? · Communism Today: Case Studies · The Communist Party of Cuba (PCC) · Revolutionary Armed Forces of Colombia (
Doc 2: Whereas communists believe that the transition to a communist state can only be achieved by revolution. Marx's model of communism emphasised a
Doc 3: Karl Marx and Friedrich Engels were two of the nineteenth century's most prominent communists. In the Communist Manifesto of 1848, they went
Doc 4: Communism Takes Hold in China and Beyond. • July 1, 1921: Inspired by the Russian Revolution, the Communist Party of China is formed. • January
Doc 5: munists refuse to admit that they are national Communists. Now let us see how national Communism has been mani fested, first in Russia, and subsequently in