On March 27, 1980, Cornelio filed an application for land registration involving a parcel of agricultural land that he had bought from Isaac identified as Lot No. 2716 with an area of one (1) hectare. During the trial, Cornelio claimed that he and his predecessors-in-interest had been in open, continuous, uninterrupted, public and adverse possession and occupation of the land for more than thirty (30) years. He likewise introduced in evidence a certification dated February 12, 1981 citing a presidential declaration to the effect that on June 14, 1980, agricultural lands of the public domain, including the subject matter of the application, were declared alienable and disposable agricultural land. (4%)