TASK DEFINITION: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
PROBLEM: Bollywood plots have tended to be melodramatic.

SOLUTION: Bollywood plots are usually dramatic.

PROBLEM: Eastman and Kotik performed together extensively in the early to mid 1970s.

SOLUTION: Eastman and Kotik worked together a lot in early/mid 1970's.

PROBLEM: The National Party, promoting a policy of "change", won 45% of the party vote and 59 of the 122 seats in Parliament (two seat overhang), a substantial margin over the Labour Party which won 43 seats.

SOLUTION:
The National Party, with a policy of "change", won 45% of votes and 59 seats in Parliament. It was a big win over the Labour Party which won 43 seats.