(*
\ 5h2 class="section"\ 6Records\ 5/h2\ 6
It is time to proceed with our formalization of the farmer's problem.
-A state of the system is defined by the position of four item: the goat, the
+A state of the system is defined by the position of four items: the goat, the
wolf, the cabbage, and the boat. The simplest way to declare such a data type
is to use a record.
*)