The bear needs the squirrel. The bear visits the cow. The cow sees the dog. The dog is cold. The dog is not rough. The dog does not need the squirrel. The dog visits the cow. The dog visits the squirrel. The squirrel does not need the cow. The squirrel does not see the dog. If someone sees the bear then they need the bear. If someone does not see the squirrel and they do not need the squirrel then the squirrel sees the bear. If the dog visits the cow then the cow sees the bear.
The dog needs the bear.