1 "Animal" "Is it an animal?"
1.1 "Dog" "Is it a dog?"
1.1.1 "Poodle" "Is it a poodle?"
1.1.2 "Collie" "Does it have long hair and look like Lassie?"
1.2 "Cat" "Is it a cat?"
1.2.1 "Long-haired Cat" "Is it a long-haired cat?"
1.2.1.1 "Persian" "Is it a Persian?"
1.2.2 "Short-haired Cat" "Is it a short-haired cat?"
1.2.2.1 "Siamese" "Is it Siamese?"
2 "Vegetable" "Is it a vegetable?"
2.1 "Cabbage" "Is it a cabbage?"
2.2 "Green bean" "Is it a green bean?"
2.2.1 "Half Runner" "Does it have stringy pods?"
2.2.2 "Kentucky Wonder" "Are the pods wide and fleshy?"
3 "Mineral" "Is it a mineral?"
3.1 "Coal" "Is it black and dirty and does it burn?"
3.2 "Plastic" "Is it plastic?"
3.3 "Iron" "Is it made of iron?"
3.4 "Man-made Object" "Is it a man-made object?"
3.4.1 "Automobile" "Is it an automobile?"
