Simplify the following text for a Grade 10 native English-speaking person.
Original: The legislature of India is the bicameral parliament , operating under a Westminster-style parliamentary system , and comprising the upper house called the Rajya Sabha ( Council of States ) and the lower called the Lok Sabha ( House of People ) .
Simplified: The Parliament of India is divided into two groups : the upper house , Rajya Sabha ( Council of States ) ; and the lower house , Lok Sabha ( House of People ) .