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: "a country with an elected president as head of state is called?" whose answer is sovereign state.
Each document should contain about 30 words, and these documents should contain useful information.

Query: type of country with an elected president as head of state
Useful Output:

Doc 1: The head of state in a monarchy, for instance, is usually a king or queen, while in a republic this role is typically filled by the president.
Doc 2: The UK's constitutional monarchy could become a purely ceremonial monarchy, with the monarch's prerogative powers transferred to an elected head
Doc 3: How are Heads of State chosen around Europe? ; Two-Round System, Austria, Bulgaria, Croatia, Cyprus, Czech Republic, Finland, France, Georgia*,
Doc 4: The head of state and regional heads must have strong legitimacy. In a democracy, being directly elected is the strongest legitimacy. Therefore,
Doc 5: Therefore, even though most former communist countries in Europe chose a directly elected president, none chose a pure presidential regime. The combined effect