This program is a model of a simple food chain in which grass is eaten by rabbits that are, in turn, preyed upon by foxes.
(This program; is; a model of a simple food chain in which grass is eaten by rabbits that are, in turn, preyed upon by foxes) (grass; is eaten; by rabbits; L:a simple food chain) (rabbits; are; ) (This program; is a model of; a simple food chain)
This program grass rabbits This program
is is eaten are is a model of
a model of a simple food chain in which grass is eaten by rabbits that are, in turn, preyed upon by foxes
by rabbits L:a simple food chain
a simple food chain