(2) For the purposes of subsection (1) of this section, a corporation which is described in ORS 307.375 which has only a leasehold interest in a nonprofit home for elderly persons operated by it is deemed to be a purchaser of the property if the operating lessee is specifically obligated by its contract of lease to pay the ad valorem taxes on the real and personal property used in the operation of the home. [1969 c.587 §2; 1974 c.54 §1; 1975 c.780 §17]