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.

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 .
Wave – particle duality means that all particles show both wave and particle properties .

An indentured servant or indentured laborer is an employee ( indenturee ) within a system of unfree labor who is bound by a signed or forced contract ( indenture ) to work for a particular employer for a fixed time .
An indentured servant was a worker in a contract with an employer for a certain length of time .

Tug ̆ rul Tower ( also transliterated " Toghrul " , " Tughrol " , or " Tughrul " ) is a 12th-century monument , located in the city of Rey , Iran .

Tug ̆ rul Tower is a 12th-century tower in the city of Rey , Iran .

