Simplify the following text for a Grade 7 native English-speaking person.
Original: Consequently , mosque architects borrowed the shape of the bell tower for their minarets , which were used for essentially the same purpose â '' calling the faithful to prayer .
Simplified: Because of this , mosque architects used the shape of the bell tower for their minarets . Both the minaret and the bell tower serve the same purpose â '' to call the faithful to prayer .