Homework 5
Due date:  Dec. 12, 2003
Page 446: #15-1, 15-2
Page 483: #16-1

Extra Credit:
Page 447: #15-6
Page 483: #16-16
For #6
Clause 2: -A(z, g(z,1),3)
Clause 3: -A(r, w, u) v A(w, v, 3) v -A(r, 3, t) v A (u, v, t)

return