Sec. 2. As used in this chapter, "governmental entity" means any of the following:
(1) Any officer or other organizational unit, by whatever name denominated, exercising any of the powers of state government.
(2) A state educational institution.
(3) A political subdivision (as defined in IC 36-1-2-13).
(4) An instrumentality of state government or a political subdivision (as defined in IC 36-1-2-13) or other entity created by law.