The bear needs the squirrel. The cow does not need the bear. The squirrel needs the cow. If the bear does not eat the squirrel and the squirrel does not chase the bear then the bear chases the squirrel. If something chases the cow then the cow chases the bear.
The cow needs the bear.
@0: The bear needs the squirrel.[(triple1)] The cow does not need the bear.[(triple2)] The squirrel needs the cow.[(triple3)]