Class Hierarchy

BaseObject
- Person
  - age
  - gender
- Emotion
  - angry
  - disgust
  - fear
  - happy
  - sad
  - surprise
  - neutral
- Vehicle
  - aeroplane
  - bicycle
  - boat
  - bus
  - car
  - train
  - motorbike
- Animal
  - cat
  - bird
  - cow
  - dog
  - horse
  - sheep
- Furniture
  - chair
  - bottle
  - diningtable
  - pottedplant
  - sofa
  - tvmonitor
- Scene
  - tree
  - grass