Complex sentence: If there are multiple nominations the Chancellor is chosen by an electoral college representing staff, students and graduates; formerly Chancellors were appointed for life, but since 1999 they are appointed for a renewable ten-year term.
Split into simpler sentences: If there are multiple nominations the Chancellor is chosen by an electoral college representing staff, students and graduates. Formerly Chancellors were appointed for life, but since 1999 they are appointed for a renewable ten-year term.