The monkey business domain is a well known domain.  There are three versions in this directory, each with its own startup file.  

The gist of the domain is that there is monkey and a banana and some
assorted objects the monkey needs to grab a knife before climbing the box to
get the bananas. He also needs to get a glass in order to drink water. There
is a water fountain somewhere where he can get water in his glass. The goal
is not to be hungry and not to be thirsty.  Bananas are hanging from
ceiling, he needs to climb a box.  The differences are as follows.

domain-eat&state-eat: only eating bananas (simplest version, only concerned
with the bananas.

domain&state: in this version the water fountain is somewhere in the room.
the monkey has to eat and drink.

domain-nlp&state-nlp: illustrates the need of a non-linear problem solver.
Both the bananas and the source of water are hanging from the ceiling. 
He needs to get a knife and a glass before climbing the box (there is no 
operator to get back on the floor.
