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.

Rollins retired in 1962 and opted to become a coach.
Rollins retired in 1962. He became a coach.

The northern French half comprises the Collectivité de Saint-Martin (Collectivity of St. Martin) and is an overseas collectivity of France.
The northern French half contains the Collectivité de Saint-Martin. This is also called the Collectivity of St. Martin. It is an overseas collection of France.

The NHL instituted the icing rule on March 13, 1939.

The NHL started using the icing rule in 1939.

