Objects by type (Picture, Furniture, Person, etc.)
Cars by Make & Model
Pets by Breed
Fashion by type of clothing, color etc.
Text both Printed & Handwritten
Identifiable Characteristics - Sex, Height etc.
Facial Features - Facial Hair, Hair Color, etc.
Body parts - Arm, Leg Etc.
Audio / Speech in a video
Company Logos
Questionable content can be excluded
Sex
Gore & Violence
Drugs
Discrimination