Jelaskan Rektor dari Universiti Paris dalam bahasa melayu

The university was organized as follows: at the head of the teaching body was a rector. The office was elective and of short duration; at first it was limited to four or six weeks. Simon de Brion, legate of the Holy See in France, realizing that such frequent changes caused serious inconvenience, decided that the rectorate should last three months, and this rule was observed for three years. Then the term was lengthened to one, two, and sometimes three years. The right of election belonged to the procurators of the four nations.