In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

A head teacher ( also called a school principal , or headmaster / headmistress ) is the teacher in charge of a school .
A head teacher , headmaster , headmistress , head , chancellor , principal or school director ( sometimes another title is used ) is the staff member of a school with the greatest responsibility for the management of the school .

To capture " en passant " can only be done on the move right after the double-square pawn advance .
The option to capture the moved pawn " en passant " must be exercised on the move immediately following the double-step pawn advance , or it is lost for the remainder of the game .

The ankh was the Egyptian hieroglyphic character that stood for the word nh , meaning life .
The ankh is an ancient Egyptian hieroglyphic symbol that was most commonly used in writing and in art to represent the word for " life " and , by extension , as a symbol of life itself .