instruction:
In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
question:
Throughout her reign , the Queen has made hundreds of state visits to other countries and tours of the Commonwealth ; she is the most widely travelled head of state .
answer:
Since then , the Queen has made visits to most Commonwealth countries .


question:
Wave – particle duality is the concept in quantum mechanics that every particle or quantum entity may be partly described in terms not only of particles , but also of waves .
answer:
Wave – particle duality means that all particles show both wave and particle properties .


question:
A clockwork mechanism is often powered by a clockwork motor consisting of a mainspring , a spiral torsion spring of metal ribbon .
answer:

This has a mainspring , a spiral of metal ribbon .