Smith owned Blackacre in fee modest 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." Section 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 as well as personal property not disposed of heretofore in this will, I devise and bequeath to the University of California, Berkeley." Smith died in 1999 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 formed by Smith's will? Please discuss.