“grantor” means(1) a government or municipality, other than a corporation all or substantially all of whose activities are commercial activities or the supply of financial services or any combination thereof;
(2) a band within the meaning of section 2 of the Indian Act (Revised Statutes of Canada, 1985, chapter I-5);
(3) a corporation that is controlled by a government, a municipality or a band referred to in paragraph 2 and one of the main purposes of which is to fund charitable or non-profit activities; and
(4) a trust, board, commission or other body that is established by a government, municipality, band referred to in paragraph 2 or corporation described in paragraph 3 and one of the main purposes of which is to fund charitable or non-profit activities.