Yes it is the proper English way to write it
Sister-in-law
The best answer to the question that is being stated above would be the sentence that is numbered one (1): 'When it comes to fiction, there are many genres'. The next sentences are only subtopics and only support the main idea that are lots of genres for fiction.
They divided the powers into three branches, legislative, executive, and judicial. So that in case one branch has too much power, they have the other branches to check them. All three branches has the same amount of powers but different kind of branch.