98. The following are public institutions:(1) an institution constituted as a non-profit legal person before 1 June 1972, irrespective of the Act under which its constituting instrument was granted;
(2) an institution constituted as a non-profit legal person after 1 June 1972 and continued in accordance with sections 540 to 544;
(3) an institution constituted as a legal person under this Act;
(4) an institution resulting from an amalgamation or conversion under this Act.