Kennedy owned Blackacre in fee simple absolute.In section 3 of a properly executed will, Kennedy devised Blackacre as follows: "I devise my farm Blackacre to my son Lee so long as it is used as a farm."Sections 5 & 6 of the will-made gifts to persons other than Lee.The last and residuary clause of Kennedy's will provided: "All the residue of my real and personal property not disposed of heretofore in this will, I devise and bequeath to Stanford University."What interests in Blackacre were created by Kennedy's will?