Smith owned Blackacre in fee simple absolute. In section 3 of a properly executed will, Smith devised Blackacre as follows: ‘‘I devise my farm Blackacre to my son Darwin so long as it is used as a farm.'' Sections 5 and 6 of the will made gifts to persons other than Darwin. The last clause of Smith's will provided:
‘‘All the remainder of my real and personal property not disposed of heretofore in this will, I devise and bequeath to Stanford University.'' Smith died in 2010, survived by her son Darwin.
Smith's estate has been administered. Darwin has been offered $100,000 for Blackacre if he can convey title to it in fee simple. What interests in Blackacre were created by Smith's will?