Summary: The sentence best adapted to communicate a law is a three clause sentence. It has a main clause, an if clause and an even though clause
When it comes to legal communication, it is often best to structure the command or permission into a sentence with three clauses:
In the main clause is expressed the command or permission and hence, one of the legal tokens, i.e., the right, duty, no-right or privilege. In the if clause is placed any circumstance necessary and sufficient to trigger the main clause. In the even though clause is placed any unnecessary circumstances.