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 had the power to add senators in rome?" whose answer is censors.
Each document should contain about 30 words, and these documents should contain useful information.

Query: how senators were added in ancient rome
Useful Output:

Doc 1: Patricians and plebeians; Roman citizens, Senators and Consuls: learn about the political and social structures of ancient Rome.
Doc 2: Augustus subsequently reduced the membership to around 600. The senators were led by the princeps senatus, who always spoke first in debates.
Doc 3: About 312 bc the selection of senators was transferred from the consuls to the censors, who normally chose former magistrates.
Doc 4: In the period of the Roman Republic, there were 300 senators, but then Sulla increased their number to 600. Although the tribes selected the
Doc 5: For much of the Roman Republic, the Senate had around 300 Senators, later increased to 600, and finally during the time of Julius Caesar's