The bear is blue. The bear needs the cat. The bear sees the squirrel. The cat is round. The cat visits the bear. The cow sees the squirrel. The squirrel is big. The squirrel is young. The squirrel visits the cat. The squirrel visits the cow. If someone is round then they are young. If someone needs the bear and the bear is blue then they need the cow.
The cow does not need the cat.