premise: Rusty went rolling helplessly over on the rug ; he picked himself up dazedly .<br>What sort of a cat was this who had boxed his ears ?<br>He looked dubiously at the Sarah-cat .<br>Would he or would he not ?<br>The Sarah-cat deliberately turned her back on him and resumed her toilet operations .<br>Rusty decided that he would not .
hypothesis: Rusty is a friendly kind of cat.